Quantum Mpemba effect in chaotic systems with conservation laws

Quantum Physics [Submitted on 13 Apr 2026] Quantum Mpemba effect in chaotic systems with conservation laws Thomas Martin Müller, Silvia Pappalardi, Rosario Fazio Closed chaotic quantum systems relax after a quench into a Gibbs ensemble. At late times, the relaxation speed is determined by their conservation laws and hydrodynamics. As a result, there exist pairs of initial states which thermalize to the same ensemble, yet exhibit drastically different hydrodynamic relaxation. We show in two chaotic spin chains how this enables a simple and robust realization of the quantum Mpemba effect: a system initially closer to equilibrium relaxes slower than one that starts farther away, despite both approaching the same final state. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2604.11876 [quant-ph]   (or arXiv:2604.11876v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2604.11876 Focus to learn more Submission history From: Thomas Martin Müller [view email] [v1] Mon, 13 Apr 2026 18:00:01 UTC (353 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-04 References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)