Wavefunctions for large systems as basis for electronic structure calculations

2015/09/29 by Peter Fulde, Fulde, Peter
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Electron and X-Ray Spectroscopy Techniques #Surface and Thin Film Phenomena #cond-mat.mtrl-sci #physics.chem-ph

paper · pdf · doi:10.48550/arxiv.1509.08712

arxiv created 2015/09/29 · arxiv updated 2015/09/30

Abstract

Electronic structure calculations for solids based on many-electron wavefunctions have been hampered by the argument that for large electron numbers wavefunctions are not a legitimate scientific concept, because they face an exponential wall problem. We show that this problem can be avoided by using cumulant techniques in formulating wavefunctions. Therefore calculations for solids based on many-electron functions are possible and useful. This includes also systems with strongly correlated electrons.

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