We suggest a general procedure to analyze quantum criticality for a wide variety of quantum systems of topical interest, close and below four dimensions. The idea is to apply the Wilsonian renormalization group philosopy to an effective classical functional derived from the general quantum action by averaging over degrees of freedom with non zero Matsubara frequencies. This allows to describe in an unified way all crossovers expected close to a quantum critical point

QUANTUM CRITICAL SCENARIO FROM AN EFFECTIVE CLASSICAL RENORMALIZATION GROUP TREATMENT CLOSE AND BELOW FOUR DIMENSIONS

CARAMICO D'AURIA, ALVARO;
2005

Abstract

We suggest a general procedure to analyze quantum criticality for a wide variety of quantum systems of topical interest, close and below four dimensions. The idea is to apply the Wilsonian renormalization group philosopy to an effective classical functional derived from the general quantum action by averaging over degrees of freedom with non zero Matsubara frequencies. This allows to describe in an unified way all crossovers expected close to a quantum critical point
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/8988
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