Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session F18: Mpemba Effect: anomalous cooling kinetics and its generalizations
11:30 AM–2:30 PM,
Tuesday, March 16, 2021
Sponsoring
Unit:
GSNP
Chair: Zhiyue Lu, University of North Carolina
Abstract: F18.00005 : The Mpemba effect in spin glasses: a persistent memory effect.*
1:54 PM–2:30 PM
Live
Presenter:
Enzo Marinari
(Univ of Rome La Sapienza)
Author:
Enzo Marinari
(Univ of Rome La Sapienza)
We discuss here the fact that the Mpemba effect exists in spin glasses, and that it is a non-equilibrium process, governed by the coherence length of the system. The effect occurs when the bath temperature is below the transition temperature to the glassy phase, even under thermal protocols that do not cross the critical temperature, and it follows from a strong relationship between the internal energy and the correlation length. It can be seen as an interesting direction towards the experimental study of the coherence length in super-cooled liquids and other glass formers.
*This project has received support from the European Research Council under the European Union’s Horizon 2020 Research and Innovation Program Grants 694925 and 723955–GlassUniversality. I thank the Kavli Institute for Theoretical Physics and its “Memory Formation in Matter” program, where contributions to the present work were developed, and were supported by National Science Foundation Grant
NSF-PHY-1748958.
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