Universal Relations for Fermions with Large Scattering Length
Quantum Gases
2010-08-18 v1 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
The behavior of fermions with two spin states that interact with a large scattering length is constrained by universal relations that hold for any state of the system. These relations involve a central property of the system called the contact, which measures the number of pairs of fermions with different spins that have small separations. The contact controls the thermodynamics of the system as well as the large-momentum and high-frequency tails of correlation functions. This review summarizes the current theoretical and experimental status of these universal relations.
Cite
@article{arxiv.1008.2922,
title = {Universal Relations for Fermions with Large Scattering Length},
author = {Eric Braaten},
journal= {arXiv preprint arXiv:1008.2922},
year = {2010}
}
Comments
43 pages, 6 figures, to be published as a chapter in BCS-BEC Crossover and the Unitary Fermi Gas (Lecture Notes in Physics), edited by W. Zwerger (Springer, 2011)