Instability induced renormalization

@article{Alexandre1998InstabilityIR,
  title={Instability induced renormalization},
  author={Jean Alexandre and Vincenzo Branchina and Janos Polonyi},
  journal={Physics Letters B},
  year={1998},
  volume={445},
  pages={351-356}
}
Abstract It is pointed out that models with condensates have nontrivial renormalization group flow on the tree level. The infinitesimal form of the tree level renormalization group equation is obtained and solved numerically for the φ 4 model in the symmetry broken phase. We find an attractive infrared fixed point that eliminates the metastable region and reproduces the Maxwell construction. 

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