First-Order Quantum Phase Transition in a Finite System

Details First-Order Quantum Phase Transition in a Finite System First-Order Quantum Phase Transition in a Finite System

2006-03-05

arxiv.org/abs/nucl-th/0603011v2

Phys.Rev. C74 (2006) 051301; Erratum-ibid. C74 (2006) 059905

Physics

Nuclear Physics

Nuclear Theory

5 pages, 2 figures. Minor adjustments to PRC requirements

Scientific paper

10.1103/PhysRevC.74.051301

The dynamics at the critical-point of a general first-order quantum phase transition in a finite system is examined, from an algebraic perspective. Suitable Hamiltonians are constructed whose spectra exhibit coexistence of states corresponding to two degenerate minima in the energy surface separated by an arbitrary barrier. Explicit expressions are derived for wave functions and observables at the critical-point.

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