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Low-Temperature Quantum Critical Behaviour of Systems with Transverse Ising-like Intrinsic Dynamics

A. Caramico D'Auria·L. De Cesare·I. Rabuffo
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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.

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A. Caramico D'Auria, L. De Cesare, I. Rabuffo. 2003-06-28. Low-Temperature Quantum Critical Behaviour of Systems with Transverse Ising-like Intrinsic Dynamics. https://doi.org/10.1016/s0378-4371(03)00403-5

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