--------------------------------------------------------------------------------- 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: Raúl Rica Subject: [noticias] seminario Aljaz Godec Date: 7. April 2025 at 13:37:55 CEST To: noticias@listas.ugr.es

Seminario impartido por Aljaz Godec (Max Planck Institute for Multidisciplinary Sciences, Gottingen, Alemania)

Fecha y hora: Miércoles 9 de abril, 12:10 Lugar: Aula A03 (ubicada en Aulario A de la Facultad de Ciencias)

Título: Thermal relaxation asymmetry: from single molecules to hydrodynamic fluctuation

Resumen: According to conventional wisdom, a macroscopic system placed in an environment with a different temperature relaxes (i.e., warms up or cools down) to the temperature of the surroundings. This relaxation is mediated by the flow of heat that is set only by the temperature difference. However, when rapid changes in temperature push a system far from equilibrium, thermal relaxation becomes asymmetric, which was predicted theoretically and recently confirmed experimentally. That is, under quite general conditions, heating is in fact faster than cooling.

I will first introduce the relaxation asymmetry in reversible and detailed-balance violating finite-dimensional systems. Next I will present a rigorous formulation of thermal relaxation in the framework of hydrodynamic fluctuation theory for short- and long-range interacting systems, respectively. I will show that the asymmetry persists in the hydrodynamic limit and that in contrast to finite-dimensions a "true" close-to-equilibrium thermal quench with symmetric heating and cooling at all times does not exist.

Gracias, un saludo

Raúl

-- Raúl A. Rica Alarcón 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

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