Universality of phase diagrams in QCD and QCD-like theories
arXiv:1111.3391
Abstract
We show the universality of phase diagrams in QCD and QCD-like theories through the large-N_c equivalence. The whole phase diagrams are identical between QCD at finite isospin chemical potential and SO(2N_c) and Sp(2N_c) gauge theories at finite baryon chemical potential. In the chiral limit, they are also identical to that of QCD at finite chiral chemical potential. Outside the pion or diquark condensed phase in these theories, the universality of phase diagrams is applicable to QCD at finite baryon chemical potential. We further argue that the universality may work approximately even for N_c=3. Our result makes it possible to study QCD at finite baryon chemical potential and high temperature, especially the chiral phase transition, using sign-free theories on the lattice.
7 pages, 2 figures, talk presented at the XXIX International Symposium on Lattice Field Theory (Lattice 2011), July 10-16, 2011, Squaw Valley, Lake Tahoe, California, USA
References in corpus (8)
- The Chiral Magnetic Effect
- (In)validity of large N orientifold equivalence
- Hot Quark Matter with an Axial Chemical Potential
- Singular values of the Dirac operator in dense QCD-like theories
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- Orbifold equivalence and the sign problem at finite baryon density
- Lattice QCD at finite temperature and density in the phase-quenched approximation
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