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QuantumPackage/docs/source/modules/dft_keywords.rst
2019-01-25 11:39:31 +01:00

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.. _module_dft_keywords:
.. program:: dft_keywords
.. default-role:: option
============
dft_keywords
============
This module contains the main keywords related to a DFT calculation or RS-DFT calculation, such as:
* :option:`dft_keywords exchange_functional`
* :option:`dft_keywords correlation_functional`
* :option:`dft_keywords HF_exchange` : only relevent for the :c:func:`rs_ks_scf` program
The keyword for the **range separation parameter** :math:`\mu` is the :option:`ao_two_e_erf_ints mu_erf` keyword.
The keyword for the type of density used in RS-DFT calculation with a multi-configurational wave function is the :option:`density_for_dft density_for_dft` keyword.
EZFIO parameters
----------------
.. option:: exchange_functional
name of the exchange functional
Default: short_range_LDA
.. option:: correlation_functional
name of the correlation functional
Default: short_range_LDA
.. option:: HF_exchange
Percentage of HF exchange in the DFT model
Default: 0.
Providers
---------
.. c:var:: dft_type
File : :file:`dft_keywords/keywords.irp.f`
.. code:: fortran
character*(32) :: dft_type
defines the type of DFT applied: LDA, GGA etc ...
Needs:
.. hlist::
:columns: 3
* :c:data:`correlation_functional`
* :c:data:`exchange_functional`