G_2 gauge theory at finite temperature

Guido Cossu, Massimo D'Elia, Adriano Di Giacomo, Biagio Lucini, Claudio Pica

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The gauge group being centreless, $G_2$ gauge theory is a good laboratory for studying the role of the centre of the group for colour confinement in Yang-Mills gauge theories. In this paper, we investigate $G_2$ pure gauge theory at finite temperature on the lattice. By studying the finite size scaling of the plaquette, the Polyakov loop and their susceptibilities, we show that a deconfinement phase transition takes place. The analysis of the pseudocritical exponents give strong evidence of the deconfinement transition being first order. Implications of our findings for scenarios of colour confinement are discussed.
TidsskriftJournal of High Energy Physics
Udgave nummer10
StatusUdgivet - 5. sep. 2007
Udgivet eksterntJa


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