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Phase Transitions in a Scalar Theory in 2+1 Dimensions

✍ Scribed by F.A. Dilkes; D.G.C. McKeon

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
164 KB
Volume
276
Category
Article
ISSN
0003-4916

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✦ Synopsis

We consider a renormalizable quantum field theory for a single scalar field in 2+1 dimensions at finite temperature with a Z 2 symmetry. We discuss the infrared pathologies of this theory and propose a method of resummation through the use of a gap equation. We present some numerical results for the effective potential that show that the Z 2 symmetry is broken at low temperatures, but is restored at high temperature by a first-order phase transition.

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