Fermi surfaces and Luttinger's theorem in paired fermion systems
Superconductivity
2007-05-23 v2 High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We discuss ground state properties of a mixture of two fermion species which can bind to form a molecular boson. When the densities of the fermions are unbalanced, one or more Fermi surfaces can appear: we describe the constraints placed by Luttinger's theorem on the volumes enclosed by these surfaces in such Bose-Fermi mixtures. We also discuss the nature of the quantum phase transitions involving changes in the number of Fermi surfaces.
Keywords
Cite
@article{arxiv.cond-mat/0602032,
title = {Fermi surfaces and Luttinger's theorem in paired fermion systems},
author = {Subir Sachdev and Kun Yang},
journal= {arXiv preprint arXiv:cond-mat/0602032},
year = {2007}
}
Comments
7 pages with one figure embedded. V2: Minor modifications. Final version as appeared in print