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quantum_package/plugins/MRCC_CASSD/mrcc_cassd.irp.f

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program mrcc
implicit none
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read_wf = .True.
SOFT_TOUCH read_wf
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call print_cas_coefs
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call set_generators_bitmasks_as_holes_and_particles
call run
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end
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subroutine run
implicit none
integer :: i
double precision :: E_new, E_old, delta_e
integer :: iteration
double precision :: E_past(4), lambda
E_new = 0.d0
delta_E = 1.d0
iteration = 0
call diagonalize_ci_dressed(lambda)
lambda = 1.d0
do while (delta_E > thresh_mrcc)
iteration += 1
print *, '==========================='
print *, 'MRCC Iteration', iteration
print *, '==========================='
print *, ''
E_old = sum(ci_energy_dressed)
call write_double(6,ci_energy_dressed(1),"MRCC energy")
call diagonalize_ci_dressed(lambda)
E_new = sum(ci_energy_dressed)
delta_E = dabs(E_new - E_old)
call save_wavefunction
call ezfio_set_mrcc_cassd_energy(ci_energy_dressed(1))
if (iteration > n_it_mrcc_max) then
exit
endif
enddo
call write_double(6,ci_energy_dressed(1),"Final MRCC energy")
end
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subroutine print_cas_coefs
implicit none
integer :: i,j
print *, 'CAS'
print *, '==='
do i=1,N_det_cas
print *, psi_cas_coef(i,:)
call debug_det(psi_cas(1,1,i),N_int)
enddo
call write_double(6,ci_energy(1),"Initial CI energy")
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end