SU(2) Lattice Gauge Theory at Nonzero Chemical Potential and Temperature

Physics – High Energy Physics – High Energy Physics - Lattice

Scientific paper

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Lattice2002(nonzerot), 3 pages, 3 figures

Scientific paper

10.1016/S0920-5632(03)01620-7

SU(2) lattice gauge theory with four flavors of quarks is simulated at nonzero chemical potential mu and temperature T and the results are compared to the predictions of Effective Lagrangians. Simulations on 16^4 lattices indicate that at zero T the theory experiences a second order phase transition to a diquark condensate state which is well described by mean field theory. Nonzero T and mu are studied on 12^3 times 6 lattices. For low T, increasing mu takes the system through a line of second order phase transitions to a diquark condensed phase. Increasing T at high mu, the system passes through a line of first order transitions from the diquark phase to the quark-gluon plasma phase.

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