Category:ACFDT: Difference between revisions

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== Theory ==
RPA stands for the random phase approximation is often used as synonym for the adiabatic connection fluctuation dissipation theorem (ACFDT). RPA/ACFDT provides access to the correlation energy of a system and can be understood in terms of Feynman diagrams as an infinite sum of all bubble diagrams, where excitonic effects (interactions between electrons and holes) are neglected. The RPA/ACFDT is used as a post-processing tool to determine a more accurate groundstate energy.  


== Theoretical Background ==
The following page contains more information about the theory behind RPA/ACFDT:
*{{TAG|RPA/ACFDT: Correlation energy in the Random Phase Approximation}}.


== How to ==
== How to ==
A practical guide to ACFDT/RPA calculations can be found on following [[ACFDT/RPA calculations|here]].


A comprehensive documentation on ACFDT calculations is given in {{TAG|ACFDT calculations}}.
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[[The_VASP_Manual|Contents]]


[[Category:VASP|ACFDT]][[Category:Many-Body Perturbation Theory|Many-Body Perturbation Theory]]
[[Category:VASP|ACFDT]][[Category:Many-body perturbation theory]]

Latest revision as of 10:30, 19 July 2022

Theory

RPA stands for the random phase approximation is often used as synonym for the adiabatic connection fluctuation dissipation theorem (ACFDT). RPA/ACFDT provides access to the correlation energy of a system and can be understood in terms of Feynman diagrams as an infinite sum of all bubble diagrams, where excitonic effects (interactions between electrons and holes) are neglected. The RPA/ACFDT is used as a post-processing tool to determine a more accurate groundstate energy.

The following page contains more information about the theory behind RPA/ACFDT:

How to

A practical guide to ACFDT/RPA calculations can be found on following here.



Pages in category "ACFDT"

The following 15 pages are in this category, out of 15 total.