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Develop (#15) * fixed laplacian of aos * corrected the laplacians of aos * added dft_one_e * added new feature for new dft functionals * changed the configure to add new functionals * changed the configure * added dft_one_e/README.rst * added README.rst in new_functionals * added source/programmers_guide/new_ks.rst * Thesis Yann * Added gmp installation in configure * improved qp_e_conv_fci * Doc * Typos * Added variance_max * Fixed completion in qp_create * modif TODO * fixed DFT potential for n_states gt 1 * improved pot pbe * trying to improve sr PBE * fixed potential pbe * fixed the vxc smashed for pbe sr and normal * Comments in selection * bug fixed by peter * Fixed bug with zero beta electrons * Update README.rst * Update e_xc_new_func.irp.f * Update links.rst * Update quickstart.rst * Update quickstart.rst * updated cipsi * Fixed energies of non-expected s2 (#9) * Moved diag_algorithm in Davdison * Add print_ci_vector in tools (#11) * Fixed energies of non-expected s2 * Moved diag_algorithm in Davdison * Fixed travis * Added print_ci_vector * Documentation * Cleaned qp_set_mo_class.ml * Removed Core in taskserver * Merge develop-toto and manus (#12) * Fixed energies of non-expected s2 * Moved diag_algorithm in Davdison * Fixed travis * Added print_ci_vector * Documentation * Cleaned qp_set_mo_class.ml * Removed Core in taskserver * Frozen core for heavy atoms * Improved molden module * In sync with manus * Fixed some of the documentation errors * Develop toto (#13) * Fixed energies of non-expected s2 * Moved diag_algorithm in Davdison * Fixed travis * Added print_ci_vector * Documentation * Cleaned qp_set_mo_class.ml * Removed Core in taskserver * Frozen core for heavy atoms * Improved molden module * In sync with manus * Fixed some of the documentation errors * Develop manus (#14) * modified printing for rpt2 * Comment * Fixed plugins * Scripting for functionals * Documentation * Develop (#10) * fixed laplacian of aos * corrected the laplacians of aos * added dft_one_e * added new feature for new dft functionals * changed the configure to add new functionals * changed the configure * added dft_one_e/README.rst * added README.rst in new_functionals * added source/programmers_guide/new_ks.rst * Thesis Yann * Added gmp installation in configure * improved qp_e_conv_fci * Doc * Typos * Added variance_max * Fixed completion in qp_create * modif TODO * fixed DFT potential for n_states gt 1 * improved pot pbe * trying to improve sr PBE * fixed potential pbe * fixed the vxc smashed for pbe sr and normal * Comments in selection * bug fixed by peter * Fixed bug with zero beta electrons * Update README.rst * Update e_xc_new_func.irp.f * Update links.rst * Update quickstart.rst * Update quickstart.rst * updated cipsi * Fixed energies of non-expected s2 (#9) * Moved diag_algorithm in Davdison * some modifs * modified gfortran_debug.cfg * fixed automatization of functionals * modified e_xc_general.irp.f * minor modifs in ref_bitmask.irp.f * modifying functionals * rs_ks_scf and ks_scf compiles with the automatic handling of functionals * removed prints * fixed configure * fixed the new functionals * Merge toto * modified automatic functionals * Changed python into python2 * from_xyz suppressed * Cleaning repo * Update README.md * Update README.md * Contributors * Update GITHUB.md * bibtex
2019-03-07 16:29:06 +01:00
.. _module_fci:
.. program:: fci
.. default-role:: option
===
fci
===
|CIPSI| algorithm in the full configuration interaction space.
The user point of view
----------------------
* :ref:`fci` performs |CIPSI| calculations using a stochastic scheme for both
the selection and the |PT2| contribution,
* :ref:`pt2` computes the |PT2| contribution using the wave function stored in
the |EZFIO| database.
The main keywords/options for this module are:
* :option:`determinants n_det_max` : maximum number of Slater determinants in
the |CIPSI| wave function. The :ref:`fci` program will stop when the size of
the |CIPSI| wave function will exceed :option:`determinants n_det_max`.
* :option:`perturbation pt2_max` : absolute value of the |PT2| to stop the
|CIPSI| calculation. Once the abs(|PT2|) :math:`<` :option:`perturbation pt2_max`,
the |CIPSI| calculation stops.
* :option:`determinants n_states` : number of states to consider in the |CIPSI|
calculation.
* :option:`determinants read_wf` : if |false|, starts with a |ROHF|-like
determinant, if |true|, starts with the current wave function(s) stored in
the |EZFIO| directory.
.. note::
For a multi-state calculation, it is recommended to start with :ref:`cis`
or :ref:`cisd` wave functions as a guess.
* :option:`determinants expected_s2` : expected value of |S^2| for the
desired spin multiplicity.
* :option:`determinants s2_eig` : if |true|, systematically add all the
determinants needed to have a pure value of |S^2|. Also, if |true|, it
tracks only the states having the good :option:`determinants expected_s2`.
The programmer's point of view
------------------------------
This module was created with the :ref:`module_cipsi` module.
.. seealso::
The documentation of the :ref:`module_cipsi` module.
EZFIO parameters
----------------
.. option:: energy
Calculated Selected |FCI| energy
.. option:: energy_pt2
Calculated |FCI| energy + |PT2|
Programs
--------
* :ref:`fci`
* :ref:`pt2`
Providers
---------
.. c:var:: do_ddci
File : :file:`fci/class.irp.f`
.. code:: fortran
logical :: do_only_1h1p
logical :: do_ddci
In the FCI case, all those are always false
.. c:var:: do_only_1h1p
File : :file:`fci/class.irp.f`
.. code:: fortran
logical :: do_only_1h1p
logical :: do_ddci
In the FCI case, all those are always false
Subroutines / functions
-----------------------
.. c:function:: save_energy:
File : :file:`fci/save_energy.irp.f`
.. code:: fortran
subroutine save_energy(E,pt2)
Saves the energy in |EZFIO|.
Needs:
.. hlist::
:columns: 3
* :c:data:`n_states`
Called by:
.. hlist::
:columns: 3
* :c:func:`run_cipsi`
* :c:func:`run_stochastic_cipsi`
Calls:
.. hlist::
:columns: 3
* :c:func:`ezfio_set_fci_energy`
* :c:func:`ezfio_set_fci_energy_pt2`