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quantum_package/src/AOs/README.rst

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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
Assumptions
===========
.. Do not edit this section. It was auto-generated from the
.. NEEDED_MODULES file.
* The atomic orbitals are normalized:
.. math::
\int \left(\chi_i({\bf r}) \right)^2 dr = 1
* The AO coefficients in the EZFIO files are not normalized
* The AO coefficients and exponents are ordered in increasing order of exponents
Needed Modules
==============
.. Do not edit this section. It was auto-generated from the
.. NEEDED_MODULES file.
* `Ezfio_files <http://github.com/LCPQ/quantum_package/tree/master/src/Ezfio_files>`_
* `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>`_
Documentation
=============
.. Do not edit this section. It was auto-generated from the
.. NEEDED_MODULES file.
`ao_coef <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L21>`_
Coefficients, exponents and powers of x,y and z
ao_coef(i,j) = coefficient of the jth primitive on the ith ao
`ao_coef_transp <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L136>`_
Transposed ao_coef and ao_expo
`ao_expo <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L20>`_
Coefficients, exponents and powers of x,y and z
ao_coef(i,j) = coefficient of the jth primitive on the ith ao
`ao_expo_transp <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L137>`_
Transposed ao_coef and ao_expo
`ao_nucl <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L186>`_
Index of the nuclei on which the ao is centered
`ao_num <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L1>`_
Number of atomic orbitals
`ao_num_align <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L2>`_
Number of atomic orbitals
`ao_overlap <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L96>`_
matrix of the overlap for tha AOs
S(i,j) = overlap between the ith and the jth atomic basis function
`ao_power <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L19>`_
Coefficients, exponents and powers of x,y and z
ao_coef(i,j) = coefficient of the jth primitive on the ith ao
`ao_prim_num <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L154>`_
Number of primitives per atomic orbital
`ao_prim_num_max <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L176>`_
None
`ao_prim_num_max_align <http://github.com/LCPQ/quantum_package/tree/master/src/AOs/aos.irp.f#L177>`_
None