Relativistic Strong Quantum Mpemba Effect

@misc{liu2026relativistic,
  title = {{Relativistic Strong Quantum Mpemba Effect}},
  author = {Zhilong Liu and Zehua Tian and Hui Jing and Jieci Wang},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.28017},
  eprint = {2610.28017},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.28017},
}

TY  - UNPB
TI  - Relativistic Strong Quantum Mpemba Effect
AU  - Zhilong Liu
AU  - Zehua Tian
AU  - Hui Jing
AU  - Jieci Wang
PY  - 2026
DA  - 2026/10/25
PB  - arXiv
DO  - 10.48550/arxiv.2610.28017
UR  - https://arxiv.org/abs/2610.28017
AB  - The Unruh effect links acceleration to thermalization, providing a relativistic setting for anomalous quantum relaxation. We demonstrate a {\it relativistic} strong quantum Mpemba effect in the Unruh thermalization of a two-level detector coupled to a massless scalar field. For a fixed pair of isospectral initial states, relaxation curves that never cross in inertial motion exhibit a Mpemba crossing above a threshold acceleration. At a higher, precisely tuned acceleration, the initially farther state has zero overlap with the slowest decay mode and relaxes with a faster asymptotic exponential rate. We identify how competition between transition and dephasing channels governs the relaxation spectrum, where sufficiently strong longitudinal coupling enables acceleration to switch the relaxation bottleneck between population and coherence modes. We derive the spectral-switching condition and construct isospectral preparation protocols that eliminate slow-mode contributions within their physical domains. Our results establish acceleration as a control parameter for anomalous quantum relaxation, connecting relativistic quantum dynamics with nonequilibrium thermodynamics.
ER  -