• Corpus ID: 235490458

The Random Phase Approximation for Interacting Fermi Gases in the Mean-Field Regime

@inproceedings{Christiansen2021TheRP,
title={The Random Phase Approximation for Interacting Fermi Gases in the Mean-Field Regime},
author={Martin Ravn Christiansen and Christian Hainzl and Phan Th{\a}nh Nam},
year={2021}
}`
• Published 21 June 2021
• Physics, Mathematics
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.