2003/09/16 by Deog Ki Hong, Hong, Deog Ki, Stephen D. H. Hsu +1
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #hep-lat #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.hep-lat/0309103
Lattice03 (nonzero), 3pages, 1 figure, Proceedings for Lattice 2003, July 2003, Tsukuba, Japan
arxiv created 2003/09/16 · arxiv updated 2009/12/01
Euclidean dense matter generically suffers from the fermion sign problem. However, we argue that the sign problem is absent if one considers only low-energy degrees of freedom. Specifically, the low energy effective theory of dense QCD has positive Euclidean path integral measure, which allows one to establish rigorous inequalities showing that the color-flavor locked (CFL) phase is the true vacuum of three flavor, massless QCD. We then describe a method for simulating dense QCD on the lattice. We also discuss applications to electronic systems in condensed matter, such as generalized Hubbard models.