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  • Open Access

Speeding up Pontus-Mpemba effects via dynamical phase transitions

Andrea Nava1,*, Reinhold Egger1, Bidyut Dey2, and Domenico Giuliano1,2,3

  • *Contact author: a.nava@hhu.de
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Phys. Rev. Research 7, 043332 – Published 24 December, 2025

DOI: https://doi.org/10.1103/tw8v-fzcc

Abstract

We demonstrate that open quantum systems exhibiting dynamical phase transitions (DPTs) allow for efficient protocols implementing the Pontus-Mpemba effect. The relaxation speedup toward a predesignated target state is tied to the existence of a long metastable time window preceding the DPT and can be exploited in applications to systematically optimize quantum protocols. As paradigmatic example for the connection between DPTs and quantum Mpemba effects, we study one-dimensional interacting lattice fermions corresponding to a dissipative variant of the Gross-Neveu model.

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Phys. Rev. Research 7, 043332– Published 24 December, 2025
  • Received 11 September 2025
  • Accepted 5 December 2025
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