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https://github.com/QuantumPackage/qp2.git
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71 lines
1.5 KiB
Fortran
71 lines
1.5 KiB
Fortran
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! ---
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program tc_som
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BEGIN_DOC
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! TODO : Put the documentation of the program here
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END_DOC
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implicit none
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print *, ' starting ...'
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print *, ' do not forget to do tc-scf first'
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my_grid_becke = .True.
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my_n_pt_r_grid = 30
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my_n_pt_a_grid = 50
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! my_n_pt_r_grid = 10 ! small grid for quick debug
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! my_n_pt_a_grid = 26 ! small grid for quick debug
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touch my_grid_becke my_n_pt_r_grid my_n_pt_a_grid
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PROVIDE mu_erf
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print *, ' mu = ', mu_erf
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PROVIDE j1b_type
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print *, ' j1b_type = ', j1b_type
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print *, j1b_pen
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read_wf = .true.
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touch read_wf
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call main()
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end
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! ---
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subroutine main()
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implicit none
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integer :: i, i_HF, degree
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double precision :: hmono_1, htwoe_1, hthree_1, htot_1
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double precision :: hmono_2, htwoe_2, hthree_2, htot_2
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double precision :: U_SOM
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PROVIDE N_int N_det
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do i = 1, N_det
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call get_excitation_degree(HF_bitmask, psi_det(1,1,i), degree, N_int)
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if(degree == 0) then
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i_HF = i
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exit
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endif
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enddo
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print *, ' HF determinants:', i_HF
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print *, ' N_det :', N_det
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U_SOM = 0.d0
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do i = 1, N_det
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if(i == i_HF) cycle
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call htilde_mu_mat_bi_ortho(psi_det(1,1,i_HF), psi_det(1,1,i), N_int, hmono_1, htwoe_1, hthree_1, htot_1)
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call htilde_mu_mat_bi_ortho(psi_det(1,1,i), psi_det(1,1,i_HF), N_int, hmono_2, htwoe_2, hthree_2, htot_2)
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U_SOM += htot_1 * htot_2
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enddo
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U_SOM = 0.5d0 * U_SOM
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print *, ' U_SOM = ', U_SOM
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return
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end subroutine main
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! ---
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