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; M. T., Mercaldo; I., Rabuffo; L., DE CESARE. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - STAMPA. - 344:(2005), pp. 395-400.
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 pointI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
