Talk presented by Shigemi Ohta

Parallel Session: Finite Temperature and Density IV

Friday July 2nd, 16.40 - 17.00, Room 7

SU(4) pure-gauge phase structure and string tensions

Abstract: We present numerical evidence that the SU(4) pure-gauge dynamics has a finite-temperature first-order phase transition. For a 6x20^3 lattice, this transition occurs at the inverse-square coupling of 8/g^2 ~ 10.79. Below this and above the known bulk phase transition at 8/g^2 ~ 10.2 is a confined phase in which we find two different string tensions, one between the fundamental 4 and 4* representations and the other between the self-dual diquark 6 representations. The ratio of these two is about 1.5.

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