2018/05/30 by Premala Chandra, Piers Coleman, Mucio A. Continentino +1 · 14 citations
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Coupling (piping) #Physics of Superconductivity and Magnetism #Quantum #Quantum annealing #Quantum critical point #Quantum fluctuation #Quantum many-body systems #Quantum phase transition #Quantum phases #Quantum system #Scaling #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · open access · doi:10.1103/physrevresearch.2.043440
published in Physical Review Research 2(4) (American Physical Society) · This paper contains a considerably expanded discussion of the material presented in arXiv:1805.11771
openalex created_date 2018/04/06 · arxiv created 2020/12/02 · openalex publication_date 2020/12/31 · arxiv updated 2021/01/05 · openalex updated_date 2026/08/06
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.