Selective Quantum Mpemba Dynamics in Chaotic Spin Chains
Abstract
In a symmetry-restoration quantum Mpemba effect, an initial state with stronger local symmetry breaking can lose that memory faster than a state that starts closer to the symmetric manifold. We study how this local ordering reversal depends on the spatial profile of a longitudinal field in a clean U(1)-conserving spin chain, comparing spectral level statistics with crossings of the entanglement asymmetry for the same Hamiltonians. We find that Gaussian orthogonal ensemble (GOE)-like level statistics alone do not determine whether Mpemba crossings occur. Across field textures, GOE-like spectra can occur with or without entanglement-asymmetry crossings at the same field strength. In a near-staggered detuned field, the total charge-sector coherence reverses its ordering while the entanglement asymmetry retains its initial order. This contrast links the crossing response to the distribution of local charge-sector coherence and its entropic weighting in the reduced density matrix.
Related
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BibTeX
@misc{zheng2026selective,
title = {{Selective Quantum Mpemba Dynamics in Chaotic Spin Chains}},
author = {Ri-Hua Zheng and Yang Xiao and Yu Wang and Ye-Hong Chen and Yan Xia},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2607.07081},
eprint = {2607.07081},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.07081},
}
RIS
TY - UNPB
TI - Selective Quantum Mpemba Dynamics in Chaotic Spin Chains
AU - Ri-Hua Zheng
AU - Yang Xiao
AU - Yu Wang
AU - Ye-Hong Chen
AU - Yan Xia
PY - 2026
DA - 2026/09/21
PB - arXiv
DO - 10.48550/arxiv.2607.07081
UR - https://arxiv.org/abs/2607.07081
AB - In a symmetry-restoration quantum Mpemba effect, an initial state with stronger local symmetry breaking can lose that memory faster than a state that starts closer to the symmetric manifold. We study how this local ordering reversal depends on the spatial profile of a longitudinal field in a clean U(1)-conserving spin chain, comparing spectral level statistics with crossings of the entanglement asymmetry for the same Hamiltonians. We find that Gaussian orthogonal ensemble (GOE)-like level statistics alone do not determine whether Mpemba crossings occur. Across field textures, GOE-like spectra can occur with or without entanglement-asymmetry crossings at the same field strength. In a near-staggered detuned field, the total charge-sector coherence reverses its ordering while the entanglement asymmetry retains its initial order. This contrast links the crossing response to the distribution of local charge-sector coherence and its entropic weighting in the reduced density matrix.
ER -