Orbifold equivalence and the sign problem at finite baryon density.
Volume
106
Pagination
091603 - ?
Publisher
DOI
10.1103/PhysRevLett.106.091603
Journal
Phys Rev Lett
Issue
Metadata
Show full item recordAbstract
We point out that SO(2N(c)) gauge theory with N(f) fundamental Dirac fermions does not have a sign problem at finite baryon number chemical potential μ(B). One can thus use lattice Monte Carlo simulations to study this theory at finite density. The absence of a sign problem in the SO(2N(c)) theory is particularly interesting because a wide class of observables in the SO(2N(c)) theory coincide with observables in QCD in the large N(c) limit, as we show using the technique of large N(c) orbifold equivalence. We argue that the orbifold equivalence between the two theories continues to hold at finite μ(B) provided one adds appropriate deformation terms to the SO(2N(c)) theory. This opens up the prospect of learning about QCD at finite μ(B) using lattice studies of the SO(2N(c)) theory.
Authors
Cherman, A; Hanada, M; Robles-Llana, DCollections
- Mathematics [1686]