Degeneracy induced scaling of the correlation length for periodic models
arXiv:1204.0440 · doi:10.1016/j.nuclphysb.2012.06.016
Abstract
The broken symmetric phase of scalar models exhibits an infrared fixed point which is induced by the degenerate effective potential. The definition of the correlation length in the infrared regime enables us to determine the type of the phase transition in the model. It is shown that the massive sine-Gordon model exhibits a continuous, while the layered sine-Gordon model has an infinite order Kosterlitz-Thouless type phase transition.
22 pages, 9 figures, final version, to appear in Nucl. Phys. B
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- Functional renormalization group with a compactly supported smooth regulator function
- Truncation Effects in the Functional Renormalization Group Study of Spontaneous Symmetry Breaking
- Spontaneous symmetry breaking and optimization of functional renormalization group
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