Exact Renormalization Group : A New Method for Blocking the Action

Details Exact Renormalization Group : A New Method for Blocking the Action Exact Renormalization Group : A New Method for Blocking the Action

2009-03-10

arxiv.org/abs/0903.1812v1

J. Phys. A: Math. Theor. 42 (2009) 225004

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

We consider the exact renormalization group for a non-canonical scalar field theory in which the field is coupled to the external source in a special non linear way. The Wilsonian action and the average effective action are then simply related by a Legendre transformation up to a trivial quadratic form. An exact mapping between canonical and non-canonical theories is obtained as well as the relations between their flows. An application to the theory of liquids is sketched.

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