Towards a quantum fluid theory of correlated many-fermion systems from first principles

Journal Article · 15 February 2022 · SciPost Physics

DOI: https://doi.org/10.21468/SciPostPhys.12.2.062 · OSTI ID:1845586

Moldabekov, Zhandos ^[1]; Dornheim, Tobias ^[1]; Gregori, Gianluca ^[2]; Graziani, Frank ^[3]; Bonitz, Michael ^[4]; Cangi, Attila ^[1]

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1. Center for Advanced Systems Understanding, Helmholtz-Zentrum Dresden-Rossendorf
2. University of Oxford
3. Lawrence Livermore National Laboratory
4. Kiel University

Correlated many-fermion systems emerge in a broad range of phenomena in warm dense matter, plasmonics, and ultracold atoms. Quantum hydrodynamics (QHD) complements first-principles methods for many-fermion systems at larger scales. We illustrate the failure of the standard Bohm potential central to QHD for strong perturbations when the density perturbation is larger than about 10^{-3} ${10}^{-3}$ of the mean density. We then extend QHD to this regime via the many-fermion Bohm potential from first-principles. This may lead to more accurate QHD simulations beyond their common application domain in the presence of strong perturbations at scales unattainable with first-principles methods.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE; USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC52-07NA27344
• OSTI ID: 1845586
• Report Number(s): LLNL-JRNL-835582; 062
• Journal Information: SciPost Physics, Journal Name: SciPost Physics Journal Issue: 2 Vol. 12; ISSN 2542-4653
• Publisher: Stichting SciPostCopyright Statement
• Country of Publication: Netherlands
• Language: English