BEGIN:VCALENDAR VERSION:2.0 PRODID:-//wp-events-plugin.com//6.4.7.2//EN TZID:Europe/Paris X-WR-TIMEZONE:Europe/Paris BEGIN:VEVENT UID:0-1104@lptms.universite-paris-saclay.fr DTSTART;TZID=Europe/Paris:20260414T110000 DTEND;TZID=Europe/Paris:20260414T120000 DTSTAMP:20260403T094013Z URL:http://www.lptms.universite-paris-saclay.fr/seminars/lptms-seminar-nic olas-cherroret-lkb-paris/ SUMMARY:LPTMS Seminar: Nicolas Cherroret (LKB\, Paris) - Salle des séminai res du FAST et du LPTMS\, bâtiment Pascal n°530 - 14 Avr 26 11:00 DESCRIPTION:The Dynamical Condensation Phase Transition\nNicolas Cherroret (LKB\, Paris)\n \;\n\nFollowing a quantum quench\, local observables i n non-integrable many-body systems typically thermalize. In certain cases\ , however\, this process can be critically slowed down: the system first e xhibits universal dynamical scaling laws with strongly non-thermal propert ies\, before eventually reaching thermal equilibrium on a longer time scal e. This behavior has been referred to as a non-thermal fixed point. In thi s talk\, I will discuss the far-from-equilibrium dynamics of 3D Bose gases suddenly quenched across their condensation transition. I will show that this dynamics gives rise to distinct (non)-thermal fixed points\, dependin g on whether the quench is performed above\, at or below the critical poin t. In particular\, quenches below the critical point generally involve a t ransient regime of weak turbulence\, followed at later times by a coarseni ng dynamics associated with the slow recombination of vortex lines. Quench es at the critical point\, on the other hand\, lead to a universal dynamic s presumably without vortices but involving the diffusion of critical fluc tuations. If time permits\, I will also discuss how this universal dynamic s is destabilized in the presence of perturbations\, specifically external drive and disorder. CATEGORIES:seminars LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53 0\, rue André Riviere\, Orsay\, 91405\, France X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\ , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°530:geo:0,0 END:VEVENT BEGIN:VTIMEZONE TZID:Europe/Paris X-LIC-LOCATION:Europe/Paris BEGIN:DAYLIGHT DTSTART:20260329T030000 TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST END:DAYLIGHT END:VTIMEZONE END:VCALENDAR