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arxiv: 0908.4030 · v1 · submitted 2009-08-27 · ✦ hep-lat

SU(2) lattice gauge theory in 2+1 dimensions: critical couplings from twisted boundary conditions and universality

Sam Edwards , Lorenz von Smekal This is my paper
classification ✦ hep-lat
keywords betacouplingcriticaldeconfinementdimensionsenergyfreegauge
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We present a precision determination of the critical coupling beta_c for the deconfinement transition in pure SU(2) gauge theory in 2+1 dimensions. This is possible from universality, by intersecting the center vortex free energy as a function of the lattice coupling beta with the exactly known value of the interface free energy in the 2D Ising model at criticality. Results for lattices with different numbers of sites N_t along the Euclidean time direction are used to determine how beta varies with temperature for a given N_t around the deconfinement transition.

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