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Free energy decreases along Wilson renormalization group trajectories

Vipul Periwal

hep-tharXiv:hep-th/9411019

Abstract

The free energy is shown to decrease along Wilson renormalization group trajectories, in a dimension-independent fashion, for d>2. The argument assumes the monotonicity of the cutoff function, and positivity of a spectral representation of the two point function. The argument is valid to all orders in perturbation theory.

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