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

Abstract:
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 of the mean density. We then extend QHD to this regime via the \emph{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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.21468/SciPostPhys.12.2.062

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Oxford college:
Lady Margaret Hall
Role:
Author
ORCID:
0000-0002-4153-0628


Publisher:
SciPost
Journal:
SciPost Physics More from this journal
Volume:
12
Issue:
2
Article number:
062
Publication date:
2022-02-16
Acceptance date:
2021-12-16
DOI:
EISSN:
2542-4653


Language:
English
Keywords:
Pubs id:
1237481
Local pid:
pubs:1237481
Deposit date:
2022-02-04

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