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- W1520294465 abstract "Motivated by recent work on local quantum criticality in condensed matter systems, we study the Lipkin-Meshkov-Glick (LMG) model of nuclear physics as a simple model of a kind of 'quasi-local' quantum criticality. We identify a new crossover temperature, T*(V,W), between linear and nonlinear dynamics, which is analogous to the crossover between the renormalized classical and quantum critical regimes in the condensed-matter case. This temperature T* typically vanishes logarithmically as the quantum phase transition is approached, except near the quantum tricritical point where it becomes linear. We also note a further analogy with condensed-matter quantum criticality: the LMG model exhibits quantum order-by-disorder phenomena, of the type often associated with phase reconstruction near quantum critical points." @default.
- W1520294465 created "2016-06-24" @default.
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- W1520294465 date "2011-02-08" @default.
- W1520294465 modified "2023-09-27" @default.
- W1520294465 title "Quantum tricriticality and quantum phases in the Lipkin-Meshkov-Glick model" @default.
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- W1520294465 hasPublicationYear "2011" @default.
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