mirror of
https://github.com/LCPQ/quantum_package
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71 lines
1.5 KiB
Fortran
71 lines
1.5 KiB
Fortran
program mrcc
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implicit none
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read_wf = .True.
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TOUCH read_wf
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call run
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call run_mrcc
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! call run_mrcc_test
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end
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subroutine run
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implicit none
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integer :: i,j
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print *, 'CAS'
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print *, '==='
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do i=1,N_det_cas
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print *, psi_cas_coef(i,:)
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call debug_det(psi_cas(1,1,i),N_int)
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enddo
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! print *, 'SD'
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! print *, '=='
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! do i=1,N_det_non_cas
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! print *, psi_non_cas_coef(i,:)
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! call debug_det(psi_non_cas(1,1,i),N_int)
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! enddo
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call write_double(6,ci_energy(1),"Initial CI energy")
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end
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subroutine run_mrcc_test
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implicit none
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integer :: i,j
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double precision :: pt2
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pt2 = 0.d0
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do j=1,N_det
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do i=1,N_det
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pt2 += psi_coef(i,1)*psi_coef(j,1) * delta_ij(i,j,1)
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enddo
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enddo
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print *, ci_energy(1)
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print *, ci_energy(1)+pt2
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end
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subroutine run_mrcc
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implicit none
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integer :: i,j
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double precision :: E_new, E_old, delta_e
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integer :: iteration
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E_new = 0.d0
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delta_E = 1.d0
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iteration = 0
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do while (delta_E > 1.d-10)
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iteration += 1
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print *, '==========================='
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print *, 'MRCC Iteration', iteration
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print *, '==========================='
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print *, ''
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E_old = sum(ci_energy_dressed)
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call write_double(6,ci_energy_dressed(1),"MRCC energy")
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call diagonalize_ci_dressed
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E_new = sum(ci_energy_dressed)
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delta_E = dabs(E_new - E_old)
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if (iteration > 20) then
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exit
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endif
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enddo
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call write_double(6,ci_energy_dressed(1),"Final MRCC energy")
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call ezfio_set_mrcc_energy(ci_energy_dressed(1))
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! call save_wavefunction
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end
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