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quantum_package/src/AO_Basis/README.rst
2015-07-28 17:18:45 +02:00

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==========
AOs Module
==========
This module describes the atomic orbitals basis set.
An atomic orbital :math:`\chi` centered on nucleus A is represented as:
.. math::
\chi_i({\bf r}) = (x-X_A)^a (y-Y_A)^b (z-Z_A)^c \sum_k c_{ki} e^{-\gamma_{ki} |{\bf r} - {\bf R}_A|^2}
The AO coefficients are normalized as:
.. math::
{\tilde c}_{ki} = \frac{c_{ki}}{ \int \left( (x-X_A)^a (y-Y_A)^b (z-Z_A)^c e^{-\gamma_{ki} |{\bf r} - {\bf R}_A|^2} \right)^2} dr
Warning: ``ao_coef`` contains the AO coefficients given in input. These do not
include the normalization constant of the AO. The ``ao_coef_normalized`` includes
this normalization factor.
The AOs are also sorted by increasing exponent to accelerate the calculation of
the two electron integrals.
Assumptions
===========
* The AO coefficients in the EZFIO files are not necessarily normalized and are normalized after reading
Needed Modules
==============
.. Do not edit this section It was auto-generated
.. by the `update_README.py` script.
.. image:: tree_dependency.png
* `Nuclei <http://github.com/LCPQ/quantum_package/tree/master/src/Nuclei>`_
Needed Modules
==============
.. Do not edit this section It was auto-generated
.. by the `update_README.py` script.
.. image:: tree_dependency.png
* `Nuclei <http://github.com/LCPQ/quantum_package/tree/master/src/Nuclei>`_
Documentation
=============
.. Do not edit this section It was auto-generated
.. by the `update_README.py` script.
`ao_coef <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ezfio_interface.irp.f#L24>`_
AO Coefficients, read from input. Those should not be used directly, as the MOs are expressed on the basis of **normalized** AOs.
`ao_coef_normalized <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L22>`_
Coefficients including the AO normalization
`ao_coef_normalized_ordered <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L45>`_
Sorted primitives to accelerate 4 index MO transformation
`ao_coef_normalized_ordered_transp <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L71>`_
Transposed ao_coef_normalized_ordered
`ao_expo <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ezfio_interface.irp.f#L134>`_
expo for each primitive of each ao_basis
`ao_expo_ordered <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L46>`_
Sorted primitives to accelerate 4 index MO transformation
`ao_expo_ordered_transp <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L85>`_
Transposed ao_expo_ordered
`ao_l <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L99>`_
ao_l = l value of the AO: a+b+c in x^a y^b z^c
`ao_l_char <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L100>`_
ao_l = l value of the AO: a+b+c in x^a y^b z^c
`ao_l_char_space <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L216>`_
Undocumented
`ao_md5 <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ezfio_interface.irp.f#L6>`_
MD5 key characteristic of the AO basis
`ao_nucl <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ezfio_interface.irp.f#L112>`_
Index of the nuclei on which the ao is centered
`ao_num <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ezfio_interface.irp.f#L68>`_
number of ao
`ao_num_align <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L1>`_
Number of atomic orbitals align
`ao_overlap <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ao_overlap.irp.f#L1>`_
Overlap between atomic basis functions:
:math:`\int \chi_i(r) \chi_j(r) dr)`
`ao_overlap_abs <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ao_overlap.irp.f#L65>`_
Overlap between absolute value of atomic basis functions:
:math:`\int |\chi_i(r)| |\chi_j(r)| dr)`
`ao_overlap_x <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ao_overlap.irp.f#L2>`_
Overlap between atomic basis functions:
:math:`\int \chi_i(r) \chi_j(r) dr)`
`ao_overlap_y <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ao_overlap.irp.f#L3>`_
Overlap between atomic basis functions:
:math:`\int \chi_i(r) \chi_j(r) dr)`
`ao_overlap_z <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ao_overlap.irp.f#L4>`_
Overlap between atomic basis functions:
:math:`\int \chi_i(r) \chi_j(r) dr)`
`ao_power <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ezfio_interface.irp.f#L46>`_
power for each dimension for each ao_basis
`ao_prim_num <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/ezfio_interface.irp.f#L90>`_
Number of primitives per atomic orbital
`ao_prim_num_max <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L12>`_
Undocumented
`ao_prim_num_max_align <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L112>`_
Number of primitives per atomic orbital aligned
`l_to_charater <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L123>`_
character corresponding to the "L" value of an AO orbital
`n_aos_max <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L136>`_
Number of AOs per atom
`n_pt_max_i_x <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/dimensions_integrals.irp.f#L2>`_
Undocumented
`n_pt_max_integrals <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/dimensions_integrals.irp.f#L1>`_
Undocumented
`nucl_aos <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L149>`_
List of AOs attached on each atom
`nucl_list_shell_aos <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L167>`_
Index of the shell type Aos and of the corresponding Aos
Per convention, for P,D,F and G AOs, we take the index
of the AO with the the corresponding power in the "X" axis
`nucl_n_aos <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L135>`_
Number of AOs per atom
`nucl_num_shell_aos <http://github.com/LCPQ/quantum_package/tree/master/src/AO_Basis/aos.irp.f#L168>`_
Index of the shell type Aos and of the corresponding Aos
Per convention, for P,D,F and G AOs, we take the index
of the AO with the the corresponding power in the "X" axis