The Mpemba effect in spin glasses is a persistent memory effect Articles uri icon

authors

  • BAITY-JESI, MARCO
  • CALORE, ENRICO
  • CRUZ, ANDRES
  • FERNANDEZ, LUIS ANTONIO
  • GIL NARVION, JOSE MIGUEL
  • GORDILLO GUERRERO, ANTONIO
  • IÑIGUEZ, DAVID
  • LASANTA BECERRA, ANTONIO
  • MAIORANO, ANDREA
  • MARINARI, ENZO
  • MARTIN MAYOR, VICTOR
  • MORENO GORDO, JAVIER
  • MUÑOZ SUDUPE, ANTONIO
  • NAVARRO, DENIS
  • PARISI, GIORGIO
  • PEREZ GAVIRO, SERGIO
  • RICCI TERSENGHI, FEDERICO
  • RUIZ LORENZO, JUAN JESUS
  • SCHIFANO, SEBASTIANO FABIO
  • SEOANE, BEATRIZ
  • TARANCON, ALFONSO
  • TRIPICCIONE, RAFFAELE
  • YLLANES, DAVID

publication date

  • July 2019

start page

  • 15350

end page

  • 15355

issue

  • 31

volume

  • 116

International Standard Serial Number (ISSN)

  • 1091-6490

Electronic International Standard Serial Number (EISSN)

  • 0027-8424

abstract

  • The Mpemba effect occurs when a hot system cools faster than an initially colder one, when both are refrigerated in the same thermal reservoir. Using the custom-built supercomputer Janus II, we study the Mpemba effect in spin glasses and show that it is a nonequilibrium process, governed by the coherence length xi of the system. The effect occurs when the bath temperature lies in the glassy phase, but it is not necessary for the thermal protocol to cross the critical temperature. In fact, the Mpemba effect follows from a strong relationship between the internal energy and xi that turns out to be a sure-tell sign of being in the glassy phase. Thus, the Mpemba effect presents itself as an intriguing avenue for the experimental study of the coherence length in supercooled liquids and other glass formers

keywords

  • memory effects; mpemba effect; nonequilibrium physics; spin glasses