Symmetry mismatch between SU(2) Hamiltonian and U(1) Liouvillian in a long-range XXZ chain with dephasing selects fast eigenmodes, enabling size-independent fast relaxation and a strong quantum Mpemba effect.
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In U(1)-symmetric random circuits, initial states with lower stabilizer Rényi entropy generate nonstabilizerness faster than those with higher entropy, with the effect also depending on spatial charge structure and extending to SU(2) circuits and Hamiltonian dynamics.
Trapped-ion experiment reveals multi-Mpemba effect with multiple trajectory crossings, explained by a phase diagram combining SDM overlap and initial relaxation speed from the fastest decay mode.
More strongly entangled two-qubit states can lose entanglement faster than weaker ones under local amplitude damping due to excited-state population catalyzing sudden death.