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Phase transition in an O(N) gauge model in two dimensions
Abstract
We study the phase transition properties of the nonlinear O(N) σ model in two dimensions when O(N) gauge interactions are included. With nonzero gauge coupling, this theory exhibits a first-order phase transition in the large-N limit. The broken-symmetry phase is stabilized by the Higgs mechanism and Goldstone bosons do not appear. © 1976 The American Physical Society.
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