Effects of instability of quantum critical behaviour in systems with quenched impurities

I. Rabuffo

Physica A: Statistical Mechanics and its Applications, 2000, vol. 277, issue 1, 174-182

Abstract: The one-loop renormalization group equations are derived and analysed for a wide class of quantum statistical models describing the critical behaviour of systems with short-range correlated random impurities. The classical and quantum critical properties are considered to first order in a double ε-expansion. It is proven that the quantum critical behaviour of disordered systems with short-range random correlation is equivalent to the classical critical behaviour of certain systems with extended random impurities. The reliability of the double ε-expansion method and the interpretation of the results are discussed.

Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:277:y:2000:i:1:p:174-182

DOI: 10.1016/S0378-4371(99)00450-1

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