Low-temperature quantum critical behaviour of systems with transverse Ising-like intrinsic dynamics

A. Caramico D'Auria, L. De Cesare and I. Rabuffo

Physica A: Statistical Mechanics and its Applications, 2003, vol. 327, issue 3, 442-460

Abstract: The low-temperature properties and crossover phenomena of d-dimensional transverse Ising-like systems within the influence domain of the quantum critical point are investigated solving the appropriate one-loop renormalization group equations. The phase diagram is obtained near and at d=3 and several sets of critical exponents are determined which describe different responses of a system to quantum fluctuations according to the way of approaching the quantum critical point. The results are in remarkable agreement with experiments for a wide variety of compounds exhibiting a quantum phase transition, as the ferroelectric oxides and other displacive systems.

Keywords: Quantum critical point; Crossover effective exponents (search for similar items in EconPapers)
Date: 2003
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:327:y:2003:i:3:p:442-460

DOI: 10.1016/S0378-4371(03)00403-5

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