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Mixed-Order Symmetry-Breaking Quantum Phase Transition Far from Equilibrium.

08:00 EDT 14th June 2019 | BioPortfolio

Summary of "Mixed-Order Symmetry-Breaking Quantum Phase Transition Far from Equilibrium."

We study the current-carrying steady state of a transverse field Ising chain coupled to magnetic thermal reservoirs and obtain the nonequilibrium phase diagram as a function of the magnetization potential of the reservoirs. Upon increasing the magnetization bias we observe a discontinuous jump of the magnetic order parameter that coincides with a divergence of the correlation length. For steady states with a nonvanishing conductance, the entanglement entropy at zero temperature displays a bias dependent logarithmic correction that violates the area law and differs from the well-known equilibrium case. Our findings show that out-of-equilibrium conditions allow for novel critical phenomena not possible at equilibrium.

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This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 235701

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