Interesting seminar today. --------------------------------------------------------------------------------- Daniel Manzano Quantum Thermodynamics and Quantum Computation Group University of Granada Facultad de Ciencias, Av. Fuentenueva s/n Granada 18071, Spain Phone: +34 958241000 Ext: 20569 https://ic1.ugr.es/members/dmanzano/

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From: NanoTLab Subject: [noticias] [Seminario NanoTLab] Nonequilibrium shortcuts and anomalous thermal relaxations: the Mpemba effect Date: 7. November 2024 at 12:58:45 CET To: noticias@listas.ugr.es Cc: "rul@ugr.es" , alasanta

Buenas tardes,

el próximo lunes , 18 de noviembre a las 12.10 h tendrá lugar el siguiente seminario en el aula Aula B01 (ubicada en Sección de Biología).

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Ponente: Gianluca Teza (Fellow, Max Planck Institute for the Physics of Complex Systems). Título: Nonequilibrium shortcuts and anomalous thermal relaxations: the Mpemba effect

Abstract: Most of our intuition about the behavior of physical systems is shaped by observations at or near thermal equilibrium. However, even a phenomenon as basic as a thermal quench leads to states far from any thermal equilibrium, where counterintuitive, anomalous, effects can occur. A prime example of anomalous thermal relaxation is the Mpemba effect – a phenomenon in which a system prepared at a hot temperature cools down to the temperature of the cold environment faster than an identical system prepared at a warm temperature. Although originally witnessed in water by Aristotle more than 2000 years ago, perspectives towards the design of optimal heating/cooling protocols and several observations in a variety of systems pushed the development of a high-level characterization in the framework of nonequilibrium statistical mechanics. In this talk, I will review the phenomenology of this and related anomalous relaxation effects, in which nonmonotonic relaxation times act as the common denominator. With a focus on Ising systems, I will provide some insight on the physical mechanisms that enable the emergence of these effects. I will show how they can survive boundary and even arbitrarily weak couplings to the thermal bath, highlighting the role played by equilibrium and dynamical features. If time allows, I will showcase some preliminary results in the attempt to observe these out-of-equilibrium effects in quantum simulators.

[1] Z. Lu, O. Raz, PNAS 114 (20) 5083-5088 [2] GT, R. Yaacoby, O. Raz, Phys. Rev. Lett. 131, 017101 [3] GT, R. Yaacoby, O. Raz, Phys. Rev. Lett. 130, 207103 [4] R. Yaacoby, O. Raz, GT, arXiv: 2203.11644v1

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Un saludo,

Antonio Lasanta y Raúl Rica

-- Nanoparticles Trapping Laboratory Department of Applied Physics School of Sciences Universidad de Granada Avda. Fuentenueva s/n 18071, Granada, Spain +34 958240015 (Office) +34 958241000 Ext. 20631 (Lab) nanotlab@ugr.es mailto:nanotlab@ugr.es https://sites.google.com/view/nanotlab https://www.modelingnature.org/

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