Under dephasing, a zero-temperature initial state relaxes faster than all finite-temperature states precisely at the quantum critical point of the XXZ and J1-J2 spin chains, a strong quantum Mpemba effect.
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Quantum Mpemba Effect in Dissipative Spin Chains at Criticality
Under dephasing, a zero-temperature initial state relaxes faster than all finite-temperature states precisely at the quantum critical point of the XXZ and J1-J2 spin chains, a strong quantum Mpemba effect.