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arXiv · hep-th/0012107

The Exact Renormalization Group and First-Order Phase Transitions

N. Tetradis
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Abstract

Studies of first-order phase transitions through the use of the exact renormalization group are reviewed. In the first part the emphasis is on universal aspects: We discuss the universal critical behaviour near weakly first-order phase transitions for a three-dimensional model of two coupled scalar fields -- the cubic anisotropy model. In the second part we review the application of the exact renormalization group to the calculation of bubble-nucleation rates. More specifically, we concentrate on the pre-exponential factor. We discuss the reliability of homogeneous nucleation theory that employs a saddle-point expansion around the critical bubble for the calculation of the nucleation rate.

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N. Tetradis. 2000-12-12. The Exact Renormalization Group and First-Order Phase Transitions. https://doi.org/10.1142/s0217751x01004578

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