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quantum_package/src/Perturbation/README.rst

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===================
Perturbation Module
===================
All subroutines in `*.irp.f` starting with ``pt2_`` in the current directory are
perturbation computed using the routine ``i_H_psi``. Other cases are not allowed.
The arguments of the ``pt2_`` are always:
subroutine pt2_...( &
psi_ref, &
psi_ref_coefs, &
E_refs, &
det_pert, &
c_pert, &
e_2_pert, &
H_pert_diag, &
Nint, &
ndet, &
n_st )
integer, intent(in) :: Nint,ndet,n_st
integer(bit_kind), intent(in) :: psi_ref(Nint,2,ndet)
double precision , intent(in) :: psi_ref_coefs(ndet,n_st)
double precision , intent(in) :: E_refs(n_st)
integer(bit_kind), intent(in) :: det_pert(Nint,2)
double precision , intent(out) :: c_pert(n_st),e_2_pert(n_st),H_pert_diag
psi_ref
bitstring of the determinants present in the various n_st states
psi_ref_coefs
coefficients of the determinants on the various n_st states
E_refs
Energy of the various n_st states
det_pert
Perturber determinant
c_pert
Pertrubative coefficients for the various states
e_2_pert
Perturbative energetic contribution for the various states
H_pert_diag
Diagonal H matrix element of the perturber
Nint
Should be equal to N_int
Ndet
Number of determinants `i` in Psi on which we apply <det_pert|Hi>
N_st
Number of states
Assumptions
===========
.. Do not edit this section. It was auto-generated from the
.. NEEDED_MODULES file.
* This is not allowed:
subroutine &
pt2_....
Documentation
=============
.. Do not edit this section. It was auto-generated from the
.. NEEDED_MODULES file.
Needed Modules
==============
.. Do not edit this section. It was auto-generated from the
.. NEEDED_MODULES file.
* `AOs <http://github.com/LCPQ/quantum_package/tree/master/src/AOs>`_
* `BiInts <http://github.com/LCPQ/quantum_package/tree/master/src/BiInts>`_
* `Bitmask <http://github.com/LCPQ/quantum_package/tree/master/src/Bitmask>`_
* `Dets <http://github.com/LCPQ/quantum_package/tree/master/src/Dets>`_
* `Electrons <http://github.com/LCPQ/quantum_package/tree/master/src/Electrons>`_
* `Ezfio_files <http://github.com/LCPQ/quantum_package/tree/master/src/Ezfio_files>`_
* `Hartree_Fock <http://github.com/LCPQ/quantum_package/tree/master/src/Hartree_Fock>`_
* `MonoInts <http://github.com/LCPQ/quantum_package/tree/master/src/MonoInts>`_
* `MOs <http://github.com/LCPQ/quantum_package/tree/master/src/MOs>`_
* `Nuclei <http://github.com/LCPQ/quantum_package/tree/master/src/Nuclei>`_
* `Output <http://github.com/LCPQ/quantum_package/tree/master/src/Output>`_
* `Utils <http://github.com/LCPQ/quantum_package/tree/master/src/Utils>`_