On the Nature of the Phase Transition in SU(N), Sp(2) and E(7) Yang-Mills theory

Details On the Nature of the Phase Transition in SU(N), Sp(2) and E(7) Yang-Mills theory On the Nature of the Phase Transition in SU(N), Sp(2) and E(7) Yang-Mills theory

2010-07-15

arxiv.org/abs/1007.2619v1

Eur.Phys.J.C70:689-702,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages

Scientific paper

10.1140/epjc/s10052-010-1485-1

We study the nature of the confinement phase transition in d=3+1 dimensions in various non-abelian gauge theories with the approach put forward in [1]. We compute an order-parameter potential associated with the Polyakov loop from the knowledge of full 2-point correlation functions. For SU(N) with N=3,...,12 and Sp(2) we find a first-order phase transition in agreement with general expectations. Moreover our study suggests that the phase transition in E(7) Yang-Mills theory also is of first order. We find that it is weaker than for SU(N). We show that this can be understood in terms of the eigenvalue distribution of the order parameter potential close to the phase transition.

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