In an SU(2)-symmetric long-range XXZ chain with dephasing, highly symmetric states relax via an exact Liouvillian eigenmode of rate -2 independent of size, enabling a strong quantum Mpemba effect.
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Evidence is provided for a Mpemba-type effect via time-crossing in density-based relaxation ordering for ground and excited states in an expanding Tonks-Girardeau Bose gas.
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Symmetry-Protected Fast Relaxation and the Strong Quantum Mpemba Effect
In an SU(2)-symmetric long-range XXZ chain with dephasing, highly symmetric states relax via an exact Liouvillian eigenmode of rate -2 independent of size, enabling a strong quantum Mpemba effect.
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Mpemba Effect in an Expanding Lieb-Liniger Bose gas in a hard wall box
Evidence is provided for a Mpemba-type effect via time-crossing in density-based relaxation ordering for ground and excited states in an expanding Tonks-Girardeau Bose gas.