Quantum Annealed Criticality: A Scaling Description
Abstract
Experimentally there exist many materials with first-order phase transitions at finite temperature that display quantum criticality. Classically, a strain-energy density coupling is known to drive first-order transitions in compressible systems, and here we generalize this Larkin-Pikin mechanism to the quantum case. We show that if the T=0 system lies above its upper critical dimension, the line of first-order transitions ends in a "quantum annealed critical point" where zero-point fluctuations restore the underlying criticality of the order parameter. The generalized Larkin-Pikin phase diagram is presented and experimental consequences are discussed.
Cite
@article{arxiv.2012.01601,
title = {Quantum Annealed Criticality: A Scaling Description},
author = {Premala Chandra and Piers Coleman and Mucio A. Continentino and Gilbert G. Lonzarich},
journal= {arXiv preprint arXiv:2012.01601},
year = {2021}
}
Comments
This paper contains a considerably expanded discussion of the material presented in arXiv:1805.11771