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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A hard boundary drives the 1D Mpemba effect for polynomial potentials, not the double-well shape.
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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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The Mpemba effect likes to hit a wall
A hard boundary drives the 1D Mpemba effect for polynomial potentials, not the double-well shape.