The Equation of State of a Low-Temperature Fermi Gas with Tunable Interactions
Quantum Gases
2010-06-03 v1
Abstract
Interacting fermions are ubiquitous in nature and understanding their thermodynamics is an important problem. We measure the equation of state of a two-component ultracold Fermi gas for a wide range of interaction strengths at low temperature. A detailed comparison with theories including Monte-Carlo calculations and the Lee-Huang-Yang corrections for low-density bosonic and fermionic superfluids is presented. The low-temperature phase diagram of the spin imbalanced gas reveals Fermi liquid behavior of the partially polarized normal phase for all but the weakest interactions. Our results provide a benchmark for many-body theories and are relevant to other fermionic systems such as the crust of neutron stars.
Keywords
Cite
@article{arxiv.1004.1465,
title = {The Equation of State of a Low-Temperature Fermi Gas with Tunable Interactions},
author = {Nir Navon and Sylvain Nascimbène and Frédéric Chevy and Christophe Salomon},
journal= {arXiv preprint arXiv:1004.1465},
year = {2010}
}
Comments
28 pages, 7 figures