We generalize our previous model[9] to an O(N) symmetric twodimensional model which possesses chiral symmetry breaking (〈ψ̄ψ〉 condensate) and superconducting (Cooper pair 〈ψψ〉 condensates) phases at large-N. At zero temperature and density, the model can be solved analytically in the large-N limit. We perform the renormalization explicitly and obtain a closed form expression of the effective pot...

Recently Appelquist, Terning, andWijewardhana investigated the zero temperature chiral phase transition in SU(N) gauge theory as the number of fermions Nf is varied. They argued that there is a critical number of fermions N c f , above which there is no chiral symmetry breaking and below which chiral symmetry breaking and confinement set in. They further argued that that the transition is not s...

We study two-color lattice QCD with massless staggered fermions in the strong coupling limit using a new and efficient cluster algorithm. We focus on the phase diagram of the model as a function of temperature T and baryon chemical potential μ by working on Lt ×Ld lattices in both d = 2,3. In d = 3 we find that at μ = 0 the ground state of the system breaks the global U(2) symmetry present in t...