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The density–temperature range of exchange–correlation exciton existence by the fermionic path integral Monte Carlo method

Authors :
V. S. Filinov
P. R. Levashov
A. S. Larkin
Source :
Physics of Plasmas. 29:052106
Publication Year :
2022
Publisher :
AIP Publishing, 2022.

Abstract

A recently developed fermionic path integral Monte Carlo approach [Filinov et al., Phys. Rev. E 102, 033203 (2020) and Filinov et al., J. Phys. A 55, 035001 (2021)] has been applied for the estimation of the density–temperature range of exchange–correlation exciton existence in a strongly coupled degenerate uniform electron gas. The approach allows us to reduce the “fermionic sign problem” taking into account the interference effects of the Coulomb and exchange interaction of electrons in the basic Monte Carlo cell and its periodic images. Our results for radial distribution functions demonstrate the formation and decay of a short-range quantum ordering of electrons associated with exchange–correlation excitons in the literature. Such excitons have never been observed earlier in standard path integral Monte Carlo simulations.

Subjects

Subjects :
Condensed Matter Physics

Details

ISSN :
10897674 and 1070664X
Volume :
29
Database :
OpenAIRE
Journal :
Physics of Plasmas
Accession number :
edsair.doi...........2e13bcec11133fa11142014f1821ed09