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

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

1999-09-16

arxiv.org/abs/hep-lat/9909125v1

Nucl.Phys.Proc.Suppl. 83 (2000) 381-383

Physics

High Energy Physics

High Energy Physics - Lattice

Talk presented by S. Ohta at LATTICE99(Finite temperature and density), Pisa, Italy; 3 pages

Scientific paper

We present numerical evidence that the SU(4) pure-gauge dynamics has a finite-temperature first-order phase transition. For a $6\times 20^3$ lattice, this transition occurs at the inverse-square coupling of $8/g^2 \sim 10.79$. Below this and above the known bulk phase transition at $8/g^2 \sim 10.2$ 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. The correlation in the adjoint representation suggests no string forms between adjoint charges.

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