On the Convergence of the Expansion of Renormalization Group Flow Equation

Preprint

12 November 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9909246

Abstract

We compare and discuss the dependence of a polynomial truncation of the effective potential used to solve exact renormalization group flow equation for a model with fermionic interaction (linear sigma model) with a grid solution. The sensitivity of the results on the underlying cutoff function is discussed. We explore the validity of the expansion method for second and first-order phase transitions.

Keywords

RENORMALIZATION GROUP FLOW
FERMIONIC INTERACTION
PHASE TRANSITIONS
FLOW EQUATION
SIGMA MODEL

All Related Versions

Version 1, 1999-09-03, ArXiv
Version 2, 1999-09-08, ArXiv
Version 3, 1999-11-12, ArXiv
Published version: Physical Review D, 61 (9), 096002.

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