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:0-979@lptms.universite-paris-saclay.fr DTSTART;TZID=Europe/Paris:20241105T110000 DTEND;TZID=Europe/Paris:20241105T120000 DTSTAMP:20241017T152814Z URL:http://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lptm s-tuozo-gueneau-lpthe/ SUMMARY:Séminaire du LPTMS : Mathis Guéneau (LPTHE) and Léo Touzo (LPEN S) - Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 5 Nov 24 11:00 DESCRIPTION:Siegmund duality for physicists: a bridge between spatial and f irst-passage properties of continuous- and discrete-time stochastic proces ses\n \;\nMathis Guéneau (LPTHE) and Léo Touzo (LPENS)\n \;\n\nA ctive particles are systems — typically living organisms — capable of converting energy from their environment into directed motion. On the one hand\, there has been a lot of interest recently in the first-passage prop erties of these models\, partly motivated by applications to biology. On t he other hand\, active particles are known to exhibit exotic behaviors in the presence of confinement\, such as hard walls\, due to their non-equili brium nature.\n\nSurprisingly\, the first-passage properties of many stoch astic processes happen to be closely related to their spatial distribution in the presence of hard walls. This type of connection has a long history in mathematics\, where it is known as Siegmund duality. However\, it rema ins relatively unknown in the physics community and had never been shown f or active particles.\n\nIn this talk\, we will show how to extend this dua lity relation to a large class of stochastic processes which are particula rly relevant in physics\, including the most well-known models of active p articles\, but also diffusing diffusivity models\, and particles subjected to stochastic resetting. 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:STANDARD DTSTART:20241027T020000 TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET END:STANDARD END:VTIMEZONE END:VCALENDAR