Ab Initio Thermodynamic Results for the Degenerate Electron Gas at Finite Temperature

The uniform electron gas at finite temperature is of key relevance for many applications in dense plasmas, warm dense matter, laser excited solids, and much more. Accurate thermodynamic data for the uniform electron gas are an essential ingredient for many-body theories, in particular, density-funct...

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Bibliographic Details
Published in:Physical review letters 2015-09, Vol.115 (13), p.130402-130402, Article 130402
Main Authors: Schoof, T, Groth, S, Vorberger, J, Bonitz, M
Format: Article
Language:English
Subjects:
Approximation
Computer simulation
Density
Electron gas
Integrals
Mathematical analysis
Monte Carlo methods
Thermodynamics
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Summary:The uniform electron gas at finite temperature is of key relevance for many applications in dense plasmas, warm dense matter, laser excited solids, and much more. Accurate thermodynamic data for the uniform electron gas are an essential ingredient for many-body theories, in particular, density-functional theory. Recently, first-principles restricted path integral Monte Carlo results became available, which, however, had to be restricted to moderate degeneracy, i.e., low to moderate densities with r_{s}=r[over ¯]/a_{B}≳1. Here we present novel first-principles configuration path integral Monte Carlo results for electrons for r_{s}≤4. We also present quantum statistical data within the e^{4} approximation that are in good agreement with the simulations at small to moderate r_{s}.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.115.130402