Lʼéquilibre est une situation plutôt idéale, lʼexception plutôt que la règle dans la Nature. Chaque fois que les paramètres externes ou internes dʼun système physique subissent une modification, sa relaxation subséquente vers lʼéquilibre peut, soit être impossible, soit prendre très longtemps. Du point de vue de la physique fondamentale, aucun principe générique tel que ceux de la thermodynamique ne permet de comprendre complètement son comportement. Lʼalternative consiste à traiter chaque cas séparément. Il est illusoire de tenter de donner, au moins à ce stade, une description complète de toutes les situations hors équilibre. Mais on peut essayer dʼidentifier et de caractériser quelques traits concrets, mais toujours généraux, dʼune classe de problèmes hors équilibre – restant à identifier – et de rechercher une description unifée de ceux-ci. Dans cette contribution, je décris brièvement le comportement et la théorie dʼun jeu de systèmes hors équilibre et je tente de mettre en lumière des traits communs et quelques lois générales qui ont vu le jour au cours des dernières années.
Equilibrium is a rather ideal situation, the exception rather than the rule in Nature. Whenever the external or internal parameters of a physical system are varied, its subsequent relaxation to equilibrium may be either impossible or take very long times. From the point of view of fundamental physics, no generic principle such as the ones of thermodynamics allows us to fully understand its behaviour. The alternative is to treat each case separately. It is illusionary to attempt to give, at least at this stage, a complete description of all non-equilibrium situations. Still, one can try to identify and characterise some concrete, but still general features of a class of out-of-equilibrium problems – yet to be identified – and search for a unified description of these. In this report, I briefly describe the behaviour and theory of a set of non-equilibrium systems and I try to highlight common features and some general laws that have emerged in recent years.
Mot clés : Dynamique hors équilibre, Systèmes désordonnés, Dynamique sous sollicitation
Leticia F. Cugliandolo 1
@article{CRPHYS_2013__14_8_685_0, author = {Leticia F. Cugliandolo}, title = {Out-of-equilibrium dynamics of classical and quantum complex systems}, journal = {Comptes Rendus. Physique}, pages = {685--699}, publisher = {Elsevier}, volume = {14}, number = {8}, year = {2013}, doi = {10.1016/j.crhy.2013.09.004}, language = {en}, }
Leticia F. Cugliandolo. Out-of-equilibrium dynamics of classical and quantum complex systems. Comptes Rendus. Physique, Volume 14 (2013) no. 8, pp. 685-699. doi : 10.1016/j.crhy.2013.09.004. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2013.09.004/
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