Fermi surfaces and Luttinger's theorem in paired fermion systems
arXiv:cond-mat/0602032 · doi:10.1103/PhysRevB.73.174504
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.
7 pages with one figure embedded. V2: Minor modifications. Final version as appeared in print
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Cited by in corpus (14)
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