{ "id": "2106.11161", "version": "v1", "published": "2021-06-21T14:59:56.000Z", "updated": "2021-06-21T14:59:56.000Z", "title": "The Random Phase Approximation for Interacting Fermi Gases in the Mean-Field Regime", "authors": [ "Martin Ravn Christiansen", "Christian Hainzl", "Phan Thành Nam" ], "categories": [ "math-ph", "cond-mat.quant-gas", "cond-mat.str-el", "math.MP" ], "abstract": "We present a general approach to justify the random phase approximation for the homogeneous Fermi gas in three-dimensions in the mean-field scaling regime. We consider a system of $N$ fermions on a torus, interacting via a two-body repulsive potential proportional to $N^{-\\frac{1}{3}}$. In the limit $N\\rightarrow\\infty$, we derive the exact leading order of the correlation energy of the system, which coincides with the prediction of Gell-Mann and Brueckner in 1957.", "revisions": [ { "version": "v1", "updated": "2021-06-21T14:59:56.000Z" } ], "analyses": { "keywords": [ "random phase approximation", "interacting fermi gases", "mean-field regime", "two-body repulsive potential proportional", "homogeneous fermi gas" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }