Coherence susceptibility as a probe of quantum phase transitions

2015/09/30 by Jinjun Chen, Jin-Jun Chen, Jian Cui +2 · 1 citation
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Coherence (philosophical gambling strategy) #Criticality #Physics #Quantum #Quantum and electron transport phenomena #Quantum fluctuation #Quantum many-body systems #Quantum mechanics #Quantum phase transition #Quantum phases #Statistical physics #cond-mat.stat-mech #cond-mat.str-el #quant-ph

paper · pdf · doi:10.1103/physreva.94.022112

published as Phys. Rev. A 94, 022112 (2016) · Accepted version

openalex publication_date 2016/08/15 · arxiv created 2016/08/17 · arxiv updated 2016/08/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We introduce a coherence susceptibility method, based on the fact that it signals quantum fluctuations, for identifying quantum phase transitions, which are induced by quantum fluctuations. This method requires no prior knowledge of order parameter, and there is no need for careful considerations concerning the choice of a bipartition of the system. It can identify different types of quantum phase transition points exactly. At finite temperatures, where quantum criticality is influenced by thermal fluctuations, our method can pinpoint the temperature frame of quantum criticality, which perfectly coincides with recent experiments.

Citations

• Quantum Ising Phases and Transitions in Transverse Ising Models
• Continuous Quantum Phase Transitions
• Quantum instability and edge entanglement in the quasi-long-range order
• Two-Dimensional Magnetotransport in the Extreme Quantum Limit
• Entanglement spectrum of a topological phase in one dimension
• Entanglement, fidelity, and topological entropy in a quantum phase transition to topological order
• Two soluble models of an antiferromagnetic chain
• Anyons in an exactly solved model and beyond
• Local Convertibility and the Quantum Simulation of Edge States in Many-Body Systems
• Entanglement in many-body systems

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