mirror of
https://github.com/QuantumPackage/qp2.git
synced 2024-08-24 21:21:47 +02:00
state following
This commit is contained in:
parent
a7a43dafb6
commit
54d836f029
@ -522,6 +522,84 @@ subroutine davidson_diag_hjj_sjj(dets_in,u_in,H_jj,s2_out,energies,dim_in,sze,N_
|
|||||||
enddo
|
enddo
|
||||||
endif
|
endif
|
||||||
|
|
||||||
|
if (state_following) then
|
||||||
|
if (.not. only_expected_s2) then
|
||||||
|
print*,''
|
||||||
|
print*,'!!! State following only available with only_expected_s2 = .True. !!!'
|
||||||
|
STOP
|
||||||
|
endif
|
||||||
|
endif
|
||||||
|
|
||||||
|
if (state_following) then
|
||||||
|
|
||||||
|
integer :: state(N_st), idx
|
||||||
|
double precision :: omax
|
||||||
|
logical :: used
|
||||||
|
logical, allocatable :: ok(:)
|
||||||
|
double precision, allocatable :: overlp(:,:)
|
||||||
|
|
||||||
|
allocate(overlp(shift2,N_st),ok(shift2))
|
||||||
|
|
||||||
|
overlp = 0d0
|
||||||
|
do j = 1, shift2-1, N_st_diag
|
||||||
|
|
||||||
|
! Computes some states from the guess vectors
|
||||||
|
! Psi(:,j:j+N_st_diag) = U y(:,j:j+N_st_diag) and put them
|
||||||
|
! in U(1,shift2+1:shift2+1+N_st_diag) as temporary array
|
||||||
|
call dgemm('N','N', sze, N_st_diag, shift2, &
|
||||||
|
1.d0, U, size(U,1), y(1,j), size(y,1), 0.d0, U(1,shift2+1), size(U,1))
|
||||||
|
|
||||||
|
! Overlap
|
||||||
|
do l = 1, N_st
|
||||||
|
do k = 1, N_st_diag
|
||||||
|
do i = 1, sze
|
||||||
|
overlp(k+j-1,l) += U(i,l) * U(i,shift2+k)
|
||||||
|
enddo
|
||||||
|
enddo
|
||||||
|
enddo
|
||||||
|
|
||||||
|
enddo
|
||||||
|
|
||||||
|
state = 0
|
||||||
|
do l = 1, N_st
|
||||||
|
|
||||||
|
omax = 0d0
|
||||||
|
idx = 0
|
||||||
|
do k = 1, shift2
|
||||||
|
|
||||||
|
! Already used ?
|
||||||
|
used = .False.
|
||||||
|
do i = 1, N_st
|
||||||
|
if (state(i) == k) then
|
||||||
|
used = .True.
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
|
||||||
|
! Maximum overlap
|
||||||
|
if (dabs(overlp(k,l)) > omax .and. .not. used .and. state_ok(k)) then
|
||||||
|
omax = dabs(overlp(k,l))
|
||||||
|
idx = k
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
|
||||||
|
state(l) = idx
|
||||||
|
enddo
|
||||||
|
|
||||||
|
! tmp array before setting state_ok
|
||||||
|
ok = .False.
|
||||||
|
do l = 1, N_st
|
||||||
|
ok(state(l)) = .True.
|
||||||
|
enddo
|
||||||
|
|
||||||
|
do k = 1, shift2
|
||||||
|
if (.not. ok(k)) then
|
||||||
|
state_ok(k) = .False.
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
|
||||||
|
deallocate(overlp,ok)
|
||||||
|
endif
|
||||||
|
|
||||||
do k=1,shift2
|
do k=1,shift2
|
||||||
if (.not. state_ok(k)) then
|
if (.not. state_ok(k)) then
|
||||||
do l=k+1,shift2
|
do l=k+1,shift2
|
||||||
@ -537,46 +615,46 @@ subroutine davidson_diag_hjj_sjj(dets_in,u_in,H_jj,s2_out,energies,dim_in,sze,N_
|
|||||||
endif
|
endif
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
if (state_following) then
|
! if (state_following) then
|
||||||
|
!
|
||||||
overlap = -1.d0
|
! overlap = -1.d0
|
||||||
do k=1,shift2
|
! do k=1,shift2
|
||||||
do i=1,shift2
|
! do i=1,shift2
|
||||||
overlap(k,i) = dabs(y(k,i))
|
! overlap(k,i) = dabs(y(k,i))
|
||||||
enddo
|
! enddo
|
||||||
enddo
|
! enddo
|
||||||
do k=1,N_st
|
! do k=1,N_st
|
||||||
cmax = -1.d0
|
! cmax = -1.d0
|
||||||
do i=1,N_st
|
! do i=1,N_st
|
||||||
if (overlap(i,k) > cmax) then
|
! if (overlap(i,k) > cmax) then
|
||||||
cmax = overlap(i,k)
|
! cmax = overlap(i,k)
|
||||||
order(k) = i
|
! order(k) = i
|
||||||
endif
|
! endif
|
||||||
enddo
|
! enddo
|
||||||
do i=1,N_st_diag
|
! do i=1,N_st_diag
|
||||||
overlap(order(k),i) = -1.d0
|
! overlap(order(k),i) = -1.d0
|
||||||
enddo
|
! enddo
|
||||||
enddo
|
! enddo
|
||||||
overlap = y
|
! overlap = y
|
||||||
do k=1,N_st
|
! do k=1,N_st
|
||||||
l = order(k)
|
! l = order(k)
|
||||||
if (k /= l) then
|
! if (k /= l) then
|
||||||
y(1:shift2,k) = overlap(1:shift2,l)
|
! y(1:shift2,k) = overlap(1:shift2,l)
|
||||||
endif
|
! endif
|
||||||
enddo
|
! enddo
|
||||||
do k=1,N_st
|
! do k=1,N_st
|
||||||
overlap(k,1) = lambda(k)
|
! overlap(k,1) = lambda(k)
|
||||||
overlap(k,2) = s2(k)
|
! overlap(k,2) = s2(k)
|
||||||
enddo
|
! enddo
|
||||||
do k=1,N_st
|
! do k=1,N_st
|
||||||
l = order(k)
|
! l = order(k)
|
||||||
if (k /= l) then
|
! if (k /= l) then
|
||||||
lambda(k) = overlap(l,1)
|
! lambda(k) = overlap(l,1)
|
||||||
s2(k) = overlap(l,2)
|
! s2(k) = overlap(l,2)
|
||||||
endif
|
! endif
|
||||||
enddo
|
! enddo
|
||||||
|
!
|
||||||
endif
|
! endif
|
||||||
|
|
||||||
|
|
||||||
! Express eigenvectors of h in the determinant basis
|
! Express eigenvectors of h in the determinant basis
|
||||||
|
@ -123,6 +123,7 @@ END_PROVIDER
|
|||||||
endif
|
endif
|
||||||
|
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
if (N_states_diag > N_states_diag_save) then
|
if (N_states_diag > N_states_diag_save) then
|
||||||
N_states_diag = N_states_diag_save
|
N_states_diag = N_states_diag_save
|
||||||
TOUCH N_states_diag
|
TOUCH N_states_diag
|
||||||
@ -133,24 +134,95 @@ END_PROVIDER
|
|||||||
print *, 'Diagonalization of H using Lapack'
|
print *, 'Diagonalization of H using Lapack'
|
||||||
allocate (eigenvectors(size(H_matrix_all_dets,1),N_det))
|
allocate (eigenvectors(size(H_matrix_all_dets,1),N_det))
|
||||||
allocate (eigenvalues(N_det))
|
allocate (eigenvalues(N_det))
|
||||||
|
|
||||||
if (s2_eig) then
|
if (s2_eig) then
|
||||||
|
|
||||||
double precision, parameter :: alpha = 0.1d0
|
double precision, parameter :: alpha = 0.1d0
|
||||||
allocate (H_prime(N_det,N_det) )
|
allocate (H_prime(N_det,N_det) )
|
||||||
|
|
||||||
H_prime(1:N_det,1:N_det) = H_matrix_all_dets(1:N_det,1:N_det) + &
|
H_prime(1:N_det,1:N_det) = H_matrix_all_dets(1:N_det,1:N_det) + &
|
||||||
alpha * S2_matrix_all_dets(1:N_det,1:N_det)
|
alpha * S2_matrix_all_dets(1:N_det,1:N_det)
|
||||||
|
|
||||||
do j=1,N_det
|
do j=1,N_det
|
||||||
H_prime(j,j) = H_prime(j,j) - alpha*expected_s2
|
H_prime(j,j) = H_prime(j,j) - alpha*expected_s2
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
call lapack_diag(eigenvalues,eigenvectors,H_prime,size(H_prime,1),N_det)
|
call lapack_diag(eigenvalues,eigenvectors,H_prime,size(H_prime,1),N_det)
|
||||||
call nullify_small_elements(N_det,N_det,eigenvectors,size(eigenvectors,1),1.d-12)
|
call nullify_small_elements(N_det,N_det,eigenvectors,size(eigenvectors,1),1.d-12)
|
||||||
|
|
||||||
CI_electronic_energy(:) = 0.d0
|
CI_electronic_energy(:) = 0.d0
|
||||||
i_state = 0
|
i_state = 0
|
||||||
|
|
||||||
allocate (s2_eigvalues(N_det))
|
allocate (s2_eigvalues(N_det))
|
||||||
allocate(index_good_state_array(N_det),good_state_array(N_det))
|
allocate(index_good_state_array(N_det),good_state_array(N_det))
|
||||||
|
|
||||||
good_state_array = .False.
|
good_state_array = .False.
|
||||||
call u_0_S2_u_0(s2_eigvalues,eigenvectors,N_det,psi_det,N_int,&
|
call u_0_S2_u_0(s2_eigvalues,eigenvectors,N_det,psi_det,N_int,&
|
||||||
N_det,size(eigenvectors,1))
|
N_det,size(eigenvectors,1))
|
||||||
if (only_expected_s2) then
|
|
||||||
|
if (state_following) then
|
||||||
|
if (.not. only_expected_s2) then
|
||||||
|
print*,''
|
||||||
|
print*,'!!! State following only available with only_expected_s2 = .True. !!!'
|
||||||
|
STOP
|
||||||
|
endif
|
||||||
|
if (N_det < N_states) then
|
||||||
|
print*,''
|
||||||
|
print*,'!!! State following requires at least N_states determinants to be activated !!!'
|
||||||
|
STOP
|
||||||
|
endif
|
||||||
|
endif
|
||||||
|
|
||||||
|
if (state_following .and. only_expected_s2) then
|
||||||
|
|
||||||
|
integer :: state(N_states), idx,l
|
||||||
|
double precision :: overlp(N_det), omax
|
||||||
|
logical :: ok(N_det), used
|
||||||
|
|
||||||
|
i_state = 0
|
||||||
|
state = 0
|
||||||
|
do l = 1, N_states
|
||||||
|
|
||||||
|
! Overlap wrt each state
|
||||||
|
overlp = 0d0
|
||||||
|
do k = 1, N_det
|
||||||
|
do i = 1, N_det
|
||||||
|
overlp(k) = overlp(k) + psi_coef(i,l) * eigenvectors(i,k)
|
||||||
|
enddo
|
||||||
|
enddo
|
||||||
|
|
||||||
|
! Idx of the state with the maximum overlap not already "used"
|
||||||
|
omax = 0d0
|
||||||
|
idx = 0
|
||||||
|
do k = 1, N_det
|
||||||
|
|
||||||
|
! Already used ?
|
||||||
|
used = .False.
|
||||||
|
do i = 1, N_states
|
||||||
|
if (state(i) == k) then
|
||||||
|
used = .True.
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
|
||||||
|
! Maximum overlap
|
||||||
|
if (dabs(overlp(k)) > omax .and. .not. used) then
|
||||||
|
if (dabs(s2_eigvalues(k)-expected_s2) > 0.5d0) cycle
|
||||||
|
omax = dabs(overlp(k))
|
||||||
|
idx = k
|
||||||
|
endif
|
||||||
|
enddo
|
||||||
|
|
||||||
|
state(l) = idx
|
||||||
|
i_state +=1
|
||||||
|
enddo
|
||||||
|
|
||||||
|
do i = 1, i_state
|
||||||
|
index_good_state_array(i) = state(i)
|
||||||
|
good_state_array(i) = .True.
|
||||||
|
enddo
|
||||||
|
|
||||||
|
else if (only_expected_s2) then
|
||||||
|
|
||||||
do j=1,N_det
|
do j=1,N_det
|
||||||
! Select at least n_states states with S^2 values closed to "expected_s2"
|
! Select at least n_states states with S^2 values closed to "expected_s2"
|
||||||
if(dabs(s2_eigvalues(j)-expected_s2).le.0.5d0)then
|
if(dabs(s2_eigvalues(j)-expected_s2).le.0.5d0)then
|
||||||
@ -158,17 +230,23 @@ END_PROVIDER
|
|||||||
index_good_state_array(i_state) = j
|
index_good_state_array(i_state) = j
|
||||||
good_state_array(j) = .True.
|
good_state_array(j) = .True.
|
||||||
endif
|
endif
|
||||||
|
|
||||||
if(i_state.eq.N_states) then
|
if(i_state.eq.N_states) then
|
||||||
exit
|
exit
|
||||||
endif
|
endif
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
else
|
else
|
||||||
|
|
||||||
do j=1,N_det
|
do j=1,N_det
|
||||||
index_good_state_array(j) = j
|
index_good_state_array(j) = j
|
||||||
good_state_array(j) = .True.
|
good_state_array(j) = .True.
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
endif
|
endif
|
||||||
|
|
||||||
if(i_state .ne.0)then
|
if(i_state .ne.0)then
|
||||||
|
|
||||||
! Fill the first "i_state" states that have a correct S^2 value
|
! Fill the first "i_state" states that have a correct S^2 value
|
||||||
do j = 1, i_state
|
do j = 1, i_state
|
||||||
do i=1,N_det
|
do i=1,N_det
|
||||||
@ -177,6 +255,7 @@ END_PROVIDER
|
|||||||
CI_electronic_energy(j) = eigenvalues(index_good_state_array(j))
|
CI_electronic_energy(j) = eigenvalues(index_good_state_array(j))
|
||||||
CI_s2(j) = s2_eigvalues(index_good_state_array(j))
|
CI_s2(j) = s2_eigvalues(index_good_state_array(j))
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
i_other_state = 0
|
i_other_state = 0
|
||||||
do j = 1, N_det
|
do j = 1, N_det
|
||||||
if(good_state_array(j))cycle
|
if(good_state_array(j))cycle
|
||||||
@ -201,6 +280,7 @@ END_PROVIDER
|
|||||||
print*,' as the CI_eigenvectors'
|
print*,' as the CI_eigenvectors'
|
||||||
print*,' You should consider more states and maybe ask for s2_eig to be .True. or just enlarge the CI space'
|
print*,' You should consider more states and maybe ask for s2_eig to be .True. or just enlarge the CI space'
|
||||||
print*,''
|
print*,''
|
||||||
|
|
||||||
do j=1,min(N_states_diag,N_det)
|
do j=1,min(N_states_diag,N_det)
|
||||||
do i=1,N_det
|
do i=1,N_det
|
||||||
CI_eigenvectors(i,j) = eigenvectors(i,j)
|
CI_eigenvectors(i,j) = eigenvectors(i,j)
|
||||||
@ -209,14 +289,18 @@ END_PROVIDER
|
|||||||
CI_s2(j) = s2_eigvalues(j)
|
CI_s2(j) = s2_eigvalues(j)
|
||||||
enddo
|
enddo
|
||||||
endif
|
endif
|
||||||
|
|
||||||
deallocate(index_good_state_array,good_state_array)
|
deallocate(index_good_state_array,good_state_array)
|
||||||
deallocate(s2_eigvalues)
|
deallocate(s2_eigvalues)
|
||||||
|
|
||||||
else
|
else
|
||||||
|
|
||||||
call lapack_diag(eigenvalues,eigenvectors, &
|
call lapack_diag(eigenvalues,eigenvectors, &
|
||||||
H_matrix_all_dets,size(H_matrix_all_dets,1),N_det)
|
H_matrix_all_dets,size(H_matrix_all_dets,1),N_det)
|
||||||
CI_electronic_energy(:) = 0.d0
|
CI_electronic_energy(:) = 0.d0
|
||||||
call u_0_S2_u_0(CI_s2,eigenvectors,N_det,psi_det,N_int, &
|
call u_0_S2_u_0(CI_s2,eigenvectors,N_det,psi_det,N_int, &
|
||||||
min(N_det,N_states_diag),size(eigenvectors,1))
|
min(N_det,N_states_diag),size(eigenvectors,1))
|
||||||
|
|
||||||
! Select the "N_states_diag" states of lowest energy
|
! Select the "N_states_diag" states of lowest energy
|
||||||
do j=1,min(N_det,N_states_diag)
|
do j=1,min(N_det,N_states_diag)
|
||||||
do i=1,N_det
|
do i=1,N_det
|
||||||
@ -224,7 +308,9 @@ END_PROVIDER
|
|||||||
enddo
|
enddo
|
||||||
CI_electronic_energy(j) = eigenvalues(j)
|
CI_electronic_energy(j) = eigenvalues(j)
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
endif
|
endif
|
||||||
|
|
||||||
do k=1,N_states_diag
|
do k=1,N_states_diag
|
||||||
CI_electronic_energy(k) = 0.d0
|
CI_electronic_energy(k) = 0.d0
|
||||||
do j=1,N_det
|
do j=1,N_det
|
||||||
@ -235,6 +321,7 @@ END_PROVIDER
|
|||||||
enddo
|
enddo
|
||||||
enddo
|
enddo
|
||||||
enddo
|
enddo
|
||||||
|
|
||||||
deallocate(eigenvectors,eigenvalues)
|
deallocate(eigenvectors,eigenvalues)
|
||||||
endif
|
endif
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user