Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-12-07
JHEP 0704:069,2007
Physics
High Energy Physics
High Energy Physics - Theory
34 pages, LaTeX, 6 figures, typos corrected
Scientific paper
10.1088/1126-6708/2007/04/069
We study the thermodynamics of large N pure 2+1 dimensional Yang-Mills theory on a small spatial sphere. By studying the effective action for the Polyakov loop order parameter, we show analytically that the theory has a second order deconfinement transition to a phase where the eigenvalue distribution of the Polyakov loop is non-uniform but still spread over the whole unit circle. At a higher temperature, the eigenvalue distribution develops a gap, via an additional third-order phase transition. We discuss possible forms of the full phase diagram as a function of temperature and sphere radius. Our results together with extrapolation of lattice results relevant to the large volume limit imply the existence of a critical radius in the phase diagram at which the deconfinement transition switches from second order to first order. We show that the point at the critical radius and temperature can be either a tricritical point with universal behavior or a triple point separating three distinct phases.
Papadodimas Kyriakos
Raamsdonk Mark Van
Shieh Hsien-Hang
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