Chiral symmetry restoration at nonzero baryon density at strong coupling
Abstract
I investigate chiral symmetry breaking in lattice QCD at nonzero temperature and at nonzero baryon density. In the hamiltonian formalism with Susskind fermions at strong coupling the partition function describes an antiferromagnetic Ising model in a constant magnetic field. Chiral symmetry is found to be restored at a small chemical potential μ_{c} ~ 1/g^{2} and at low temperature T_{c} ~ 1/g^{2}. At zero temperature the finite density transition is first order, at zero chemical potential the finite temperature transition is second order.
 Publication:

Physics Letters B
 Pub Date:
 August 1984
 DOI:
 10.1016/03702693(84)908360
 Bibcode:
 1984PhLB..143..210V