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hep-th1997
Polchinski equation, reparameterization invariance and the derivative expansion
Jordi Comellas
The connection between the anomalous dimension and some invariance properties of the fixed point actions within exact RG is explored. As an application, Polchinski equation at next…
hep-th1997
O(N) models within the local potential approximation
Jordi Comellas, Alex Travesset
Using Wegner-Houghton equation, within the Local Potential Approximation, we study critical properties of O(N) vector models. Fixed Points, together with their critical exponents a…