436 lines
15 KiB
Fortran
436 lines
15 KiB
Fortran
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use bitmasks
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BEGIN_PROVIDER [integer(bit_kind), psi_active, (N_int,2,psi_det_size)]
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BEGIN_DOC
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! active part of psi
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END_DOC
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implicit none
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use bitmasks
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integer :: i,j,k,l
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provide cas_bitmask
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!print*, 'psi_active '
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do i = 1, N_det
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do j = 1, N_int
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psi_active(j,1,i) = iand(psi_det(j,1,i),cas_bitmask(j,1,1))
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psi_active(j,2,i) = iand(psi_det(j,2,i),cas_bitmask(j,1,1))
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enddo
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enddo
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END_PROVIDER
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subroutine give_holes_and_particles_in_active_space(det_1,det_2,n_holes_spin,n_particles_spin,n_holes,n_particles,&
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holes_active_list,particles_active_list)
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implicit none
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use bitmasks
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integer(bit_kind),intent(in) :: det_1(N_int,2)
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integer(bit_kind),intent(in ) :: det_2(N_int,2)
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integer, intent(out) :: n_holes_spin(2),n_particles_spin(2)
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integer, intent(out) :: n_holes,n_particles
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integer, intent(out) :: holes_active_list(2 * n_act_orb,2)
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integer, intent(out) :: particles_active_list(2 * n_act_orb,2)
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integer :: i
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integer(bit_kind) :: holes(N_int,2)
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integer(bit_kind) :: particles(N_int,2)
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integer(bit_kind) :: det_tmp_2(N_int,2),det_tmp_1(N_int,2)
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BEGIN_DOC
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! returns the holes and particles operators WITHIN THE ACTIVE SPACE
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! that connect det_1 and det_2. By definition, the holes/particles
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! are such that one starts from det_1 and goes to det_2
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!
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! n_holes is the total number of holes
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! n_particles is the total number of particles
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! n_holes_spin is the number of number of holes per spin (1=alpha, 2=beta)
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! n_particles_spin is the number of number of particles per spin (1=alpha, 2=beta)
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! holes_active_list is the index of the holes per spin, that ranges from 1 to n_act_orb
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! particles_active_list is the index of the particles per spin, that ranges from 1 to n_act_orb
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END_DOC
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call give_active_part_determinant(det_1,det_tmp_1)
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call give_active_part_determinant(det_2,det_tmp_2)
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do i = 1, N_int
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holes(i,1) = iand(det_tmp_1(i,1),xor(det_tmp_1(i,1),det_tmp_2(i,1)))
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holes(i,2) = iand(det_tmp_1(i,2),xor(det_tmp_1(i,2),det_tmp_2(i,2)))
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particles(i,1) = iand(det_tmp_2(i,1),xor(det_tmp_1(i,1),det_tmp_2(i,1)))
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particles(i,2) = iand(det_tmp_2(i,2),xor(det_tmp_1(i,2),det_tmp_2(i,2)))
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enddo
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integer :: holes_list(N_int*bit_kind_size,2)
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holes_list = 0
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call bitstring_to_list(holes(1,1), holes_list(1,1), n_holes_spin(1), N_int)
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call bitstring_to_list(holes(1,2), holes_list(1,2), n_holes_spin(2), N_int)
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n_holes = 0
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do i = 1, n_holes_spin(1)
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n_holes +=1
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holes_active_list(i,1) = list_act_reverse(holes_list(i,1))
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enddo
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do i = 1, n_holes_spin(2)
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n_holes +=1
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holes_active_list(i,2) = list_act_reverse(holes_list(i,2))
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enddo
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integer :: particles_list(N_int*bit_kind_size,2)
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particles_list = 0
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call bitstring_to_list(particles(1,1), particles_list(1,1), n_particles_spin(1), N_int)
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call bitstring_to_list(particles(1,2), particles_list(1,2), n_particles_spin(2), N_int)
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n_particles = 0
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do i = 1, n_particles_spin(1)
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n_particles += 1
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particles_active_list(i,1) = list_act_reverse(particles_list(i,1))
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enddo
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do i = 1, n_particles_spin(2)
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n_particles += 1
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particles_active_list(i,2) = list_act_reverse(particles_list(i,2))
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enddo
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end
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subroutine give_holes_in_inactive_space(det_1,n_holes_spin,n_holes,holes_list)
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BEGIN_DOC
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! returns the holes operators WITHIN THE INACTIVE SPACE
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! that has lead to det_1.
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!
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! n_holes is the total number of holes
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! n_holes_spin is the number of number of holes per spin (1=alpha, 2=beta)
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! holes_inactive_list is the index of the holes per spin, that ranges from 1 to mo_tot_num
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END_DOC
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implicit none
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use bitmasks
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integer(bit_kind),intent(in) :: det_1(N_int,2)
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integer, intent(out) :: n_holes_spin(2)
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integer, intent(out) :: n_holes
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integer, intent(out) :: holes_list(N_int*bit_kind_size,2)
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integer :: i
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integer(bit_kind) :: holes(N_int,2)
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integer(bit_kind) :: det_tmp_1(N_int,2)
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call give_core_inactive_part_determinant(det_1,det_tmp_1)
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do i = 1, N_int
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holes(i,1) = iand(reunion_of_core_inact_bitmask(i,1),xor(det_tmp_1(i,1),reunion_of_core_inact_bitmask(i,1)))
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holes(i,2) = iand(reunion_of_core_inact_bitmask(i,2),xor(det_tmp_1(i,2),reunion_of_core_inact_bitmask(i,2)))
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enddo
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holes_list = 0
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call bitstring_to_list(holes(1,1), holes_list(1,1), n_holes_spin(1), N_int)
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call bitstring_to_list(holes(1,2), holes_list(1,2), n_holes_spin(2), N_int)
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n_holes = n_holes_spin(1) + n_holes_spin(2)
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end
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subroutine give_particles_in_virt_space(det_1,n_particles_spin,n_particles,particles_list)
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BEGIN_DOC
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! returns the holes operators WITHIN THE VIRTUAL SPACE
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! that has lead to det_1.
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!
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! n_particles is the total number of particles
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! n_particles_spin is the number of number of particles per spin (1=alpha, 2=beta)
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! particles_inactive_list is the index of the particles per spin, that ranges from 1 to mo_tot_num
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END_DOC
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implicit none
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use bitmasks
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integer(bit_kind),intent(in) :: det_1(N_int,2)
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integer, intent(out) :: n_particles_spin(2)
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integer, intent(out) :: n_particles
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integer, intent(out) :: particles_list(N_int*bit_kind_size,2)
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integer :: i
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integer(bit_kind) :: det_tmp_1(N_int,2)
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integer(bit_kind) :: particles(N_int,2)
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call give_virt_part_determinant(det_1,det_tmp_1)
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do i = 1, N_int
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particles(i,1) = iand(virt_bitmask(i,1),det_tmp_1(i,1))
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particles(i,2) = iand(virt_bitmask(i,2),det_tmp_1(i,2))
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enddo
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particles_list = 0
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call bitstring_to_list(particles(1,1), particles_list(1,1), n_particles_spin(1), N_int)
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call bitstring_to_list(particles(1,2), particles_list(1,2), n_particles_spin(2), N_int)
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n_particles = n_particles_spin(1) + n_particles_spin(2)
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end
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subroutine get_delta_e_dyall(det_1,det_2,coef_array,hij,delta_e_final)
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BEGIN_DOC
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! routine that returns the delta_e with the Moller Plesset and Dyall operators
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!
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! with det_1 being a determinant from the cas, and det_2 being a perturber
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!
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! Delta_e(det_1,det_2) = sum (hole) epsilon(hole) + sum(part) espilon(part) + delta_e(act)
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!
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! where hole is necessary in the inactive, part necessary in the virtuals
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!
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! and delta_e(act) is obtained from the contracted application of the excitation
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!
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! operator in the active space that lead from det_1 to det_2
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END_DOC
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implicit none
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use bitmasks
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double precision, intent(out) :: delta_e_final(N_states)
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integer(bit_kind), intent(in) :: det_1(N_int,2),det_2(N_int,2)
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double precision, intent(in) :: coef_array(N_states),hij
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integer :: i,j,k,l
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integer :: i_state
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integer :: n_holes_spin(2)
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integer :: n_holes
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integer :: holes_list(N_int*bit_kind_size,2)
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double precision :: delta_e_inactive(N_states)
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integer :: i_hole_inact
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call get_excitation_degree(det_1,det_2,degree,N_int)
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if(degree>2)then
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delta_e_final = -1.d+10
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return
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endif
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call give_holes_in_inactive_space(det_2,n_holes_spin,n_holes,holes_list)
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delta_e_inactive = 0.d0
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do i = 1, n_holes_spin(1)
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i_hole_inact = holes_list(i,1)
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do i_state = 1, N_states
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delta_e_inactive += fock_core_inactive_total_spin_trace(i_hole_inact,i_state)
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enddo
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enddo
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do i = 1, n_holes_spin(2)
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i_hole_inact = holes_list(i,2)
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do i_state = 1, N_states
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delta_e_inactive(i_state) += fock_core_inactive_total_spin_trace(i_hole_inact,i_state)
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enddo
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enddo
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double precision :: delta_e_virt(N_states)
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integer :: i_part_virt
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integer :: n_particles_spin(2)
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integer :: n_particles
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integer :: particles_list(N_int*bit_kind_size,2)
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call give_particles_in_virt_space(det_2,n_particles_spin,n_particles,particles_list)
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delta_e_virt = 0.d0
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do i = 1, n_particles_spin(1)
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i_part_virt = particles_list(i,1)
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do i_state = 1, N_states
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delta_e_virt += fock_virt_total_spin_trace(i_part_virt,i_state)
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enddo
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enddo
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do i = 1, n_particles_spin(2)
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i_part_virt = particles_list(i,2)
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do i_state = 1, N_states
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delta_e_virt += fock_virt_total_spin_trace(i_part_virt,i_state)
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enddo
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enddo
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integer :: n_holes_spin_act(2),n_particles_spin_act(2)
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integer :: n_holes_act,n_particles_act
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integer :: holes_active_list(2*n_act_orb,2)
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integer :: holes_active_list_spin_traced(4*n_act_orb)
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integer :: particles_active_list(2*n_act_orb,2)
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integer :: particles_active_list_spin_traced(4*n_act_orb)
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double precision :: delta_e_act(N_states)
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delta_e_act = 0.d0
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call give_holes_and_particles_in_active_space(det_1,det_2,n_holes_spin_act,n_particles_spin_act, &
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n_holes_act,n_particles_act,holes_active_list,particles_active_list)
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integer :: icount,icountbis
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integer :: hole_list_practical(2,elec_num_tab(1)+elec_num_tab(2)), particle_list_practical(2,elec_num_tab(1)+elec_num_tab(2))
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icount = 0
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icountbis = 0
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do i = 1, n_holes_spin_act(1)
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icount += 1
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icountbis += 1
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hole_list_practical(1,icountbis) = 1
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hole_list_practical(2,icountbis) = holes_active_list(i,1)
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holes_active_list_spin_traced(icount) = holes_active_list(i,1)
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enddo
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do i = 1, n_holes_spin_act(2)
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icount += 1
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icountbis += 1
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hole_list_practical(1,icountbis) = 2
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hole_list_practical(2,icountbis) = holes_active_list(i,2)
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holes_active_list_spin_traced(icount) = holes_active_list(i,2)
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enddo
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if(icount .ne. n_holes_act) then
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print*,''
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print*, icount, n_holes_act
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print * , 'pb in holes_active_list_spin_traced !!'
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stop
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endif
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icount = 0
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icountbis = 0
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do i = 1, n_particles_spin_act(1)
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icount += 1
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icountbis += 1
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particle_list_practical(1,icountbis) = 1
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particle_list_practical(2,icountbis) = particles_active_list(i,1)
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particles_active_list_spin_traced(icount) = particles_active_list(i,1)
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enddo
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do i = 1, n_particles_spin_act(2)
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icount += 1
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icountbis += 1
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particle_list_practical(1,icountbis) = 2
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particle_list_practical(2,icountbis) = particles_active_list(i,2)
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particles_active_list_spin_traced(icount) = particles_active_list(i,2)
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enddo
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if(icount .ne. n_particles_act) then
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print*, icount, n_particles_act
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print * , 'pb in particles_active_list_spin_traced !!'
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stop
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endif
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integer :: i_hole_act, j_hole_act, k_hole_act
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integer :: i_particle_act, j_particle_act, k_particle_act
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integer :: ispin,jspin,kspin
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if (n_holes_act == 0 .and. n_particles_act == 1) then
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ispin = particle_list_practical(1,1)
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i_particle_act = particle_list_practical(2,1)
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! call get_excitation_degree(det_1,det_2,degree,N_int)
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! if(degree == 1)then
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! call get_excitation(det_1,det_2,exc,degree,phase,N_int)
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! call decode_exc(exc,degree,h1,p1,h2,p2,s1,s2)
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! i_hole = list_inact_reverse(h1)
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! i_part = list_act_reverse(p1)
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! do i_state = 1, N_states
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! delta_e_act(i_state) += one_anhil_inact(i_hole,i_part,i_state)
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! enddo
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! else if (degree == 2)then
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do i_state = 1, N_states
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delta_e_act(i_state) += one_creat(i_particle_act,ispin,i_state)
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enddo
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! endif
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else if (n_holes_act == 1 .and. n_particles_act == 0) then
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ispin = hole_list_practical(1,1)
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i_hole_act = hole_list_practical(2,1)
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do i_state = 1, N_states
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delta_e_act(i_state) += one_anhil(i_hole_act , ispin,i_state)
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enddo
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else if (n_holes_act == 1 .and. n_particles_act == 1) then
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! first hole
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ispin = hole_list_practical(1,1)
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i_hole_act = hole_list_practical(2,1)
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! first particle
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jspin = particle_list_practical(1,1)
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i_particle_act = particle_list_practical(2,1)
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do i_state = 1, N_states
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delta_e_act(i_state) += one_anhil_one_creat(i_particle_act,i_hole_act,jspin,ispin,i_state)
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enddo
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else if (n_holes_act == 2 .and. n_particles_act == 0) then
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ispin = hole_list_practical(1,1)
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i_hole_act = hole_list_practical(2,1)
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jspin = hole_list_practical(1,2)
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j_hole_act = hole_list_practical(2,2)
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do i_state = 1, N_states
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delta_e_act(i_state) += two_anhil(i_hole_act,j_hole_act,ispin,jspin,i_state)
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enddo
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else if (n_holes_act == 0 .and. n_particles_act == 2) then
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ispin = particle_list_practical(1,1)
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i_particle_act = particle_list_practical(2,1)
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jspin = particle_list_practical(1,2)
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j_particle_act = particle_list_practical(2,2)
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do i_state = 1, N_states
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delta_e_act(i_state) += two_creat(i_particle_act,j_particle_act,ispin,jspin,i_state)
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enddo
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else if (n_holes_act == 2 .and. n_particles_act == 1) then
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! first hole
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ispin = hole_list_practical(1,1)
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i_hole_act = hole_list_practical(2,1)
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! second hole
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jspin = hole_list_practical(1,2)
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j_hole_act = hole_list_practical(2,2)
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! first particle
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kspin = particle_list_practical(1,1)
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i_particle_act = particle_list_practical(2,1)
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do i_state = 1, N_states
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delta_e_act(i_state) += two_anhil_one_creat(i_particle_act,i_hole_act,j_hole_act,kspin,ispin,jspin,i_state)
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enddo
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else if (n_holes_act == 1 .and. n_particles_act == 2) then
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! first hole
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ispin = hole_list_practical(1,1)
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i_hole_act = hole_list_practical(2,1)
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! first particle
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jspin = particle_list_practical(1,1)
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i_particle_act = particle_list_practical(2,1)
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! second particle
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kspin = particle_list_practical(1,2)
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j_particle_act = particle_list_practical(2,2)
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do i_state = 1, N_states
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delta_e_act(i_state) += two_creat_one_anhil(i_particle_act,j_particle_act,i_hole_act,jspin,kspin,ispin,i_state)
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enddo
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else if (n_holes_act == 3 .and. n_particles_act == 0) then
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! first hole
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ispin = hole_list_practical(1,1)
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i_hole_act = hole_list_practical(2,1)
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! second hole
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jspin = hole_list_practical(1,2)
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j_hole_act = hole_list_practical(2,2)
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! third hole
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kspin = hole_list_practical(1,3)
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k_hole_act = hole_list_practical(2,3)
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do i_state = 1, N_states
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delta_e_act(i_state) += three_anhil(i_hole_act,j_hole_act,k_hole_act,ispin,jspin,kspin,i_state)
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enddo
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else if (n_holes_act == 0 .and. n_particles_act == 3) then
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! first particle
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ispin = particle_list_practical(1,1)
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i_particle_act = particle_list_practical(2,1)
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! second particle
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jspin = particle_list_practical(1,2)
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j_particle_act = particle_list_practical(2,2)
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! second particle
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kspin = particle_list_practical(1,3)
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k_particle_act = particle_list_practical(2,3)
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do i_state = 1, N_states
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delta_e_act(i_state) += three_creat(i_particle_act,j_particle_act,k_particle_act,ispin,jspin,kspin,i_state)
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enddo
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else if (n_holes_act .eq. 0 .and. n_particles_act .eq.0)then
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integer :: degree
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integer(bit_kind) :: det_1_active(N_int,2)
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integer :: h1,h2,p1,p2,s1,s2
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integer :: exc(0:2,2,2)
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integer :: i_hole, i_part
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double precision :: phase
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call get_excitation_degree(det_1,det_2,degree,N_int)
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if(degree == 1)then
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call get_excitation(det_1,det_2,exc,degree,phase,N_int)
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call decode_exc(exc,degree,h1,p1,h2,p2,s1,s2)
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i_hole = list_inact_reverse(h1)
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i_part = list_virt_reverse(p1)
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do i_state = 1, N_states
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delta_e_act(i_state) += one_anhil_one_creat_inact_virt(i_hole,i_part,i_state)
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enddo
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endif
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else if (n_holes_act .ge. 2 .and. n_particles_act .ge.2) then
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delta_e_act = -10000000.d0
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endif
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!print*, 'one_anhil_spin_trace'
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!print*, one_anhil_spin_trace(1), one_anhil_spin_trace(2)
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do i_state = 1, n_states
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delta_e_final(i_state) = delta_e_act(i_state) + delta_e_inactive(i_state) - delta_e_virt(i_state)
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enddo
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!write(*,'(100(f16.10,X))'), delta_e_final(1) , delta_e_act(1) , delta_e_inactive(1) , delta_e_virt(1)
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end
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