Category:ACFDT: Difference between revisions
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== Theory == | == 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: {{TAG|RPA/ACFDT: Correlation energy in the Random Phase Approximation}}. | |||
== How to == | == How to == | ||
Revision as of 15:25, 29 July 2019
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: RPA/ACFDT: Correlation energy in the Random Phase Approximation.
How to
- ACFDT: ACFDT/RPA calculations.
Pages in category "ACFDT"
The following 15 pages are in this category, out of 15 total.