Dilute Fermi gas at fourth order in effective field theory
Nuclear Theory
2020-02-05 v2 Quantum Gases
High Energy Physics - Phenomenology
Abstract
Using effective field theory methods, we calculate for the first time the complete fourth-order term in the Fermi-momentum or expansion for the ground-state energy of a dilute Fermi gas. The convergence behavior of the expansion is examined for the case of spin one-half fermions and compared against quantum Monte-Carlo results, showing that the Fermi-momentum expansion is well-converged at this order for .
Keywords
Cite
@article{arxiv.1812.08444,
title = {Dilute Fermi gas at fourth order in effective field theory},
author = {C. Wellenhofer and C. Drischler and A. Schwenk},
journal= {arXiv preprint arXiv:1812.08444},
year = {2020}
}
Comments
6 pages, 2 figures; v2: minor improvements in text, references updated, matches published version