BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Sabre//Sabre VObject 4.5.8//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Europe/Zurich X-LIC-LOCATION:Europe/Zurich TZURL:http://tzurl.org/zoneinfo/Europe/Zurich BEGIN:DAYLIGHT TZOFFSETFROM:+0100 TZOFFSETTO:+0200 TZNAME:CEST DTSTART:19810329T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET DTSTART:19961027T030000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:news873@dmi.unibas.ch DTSTAMP;TZID=Europe/Zurich:20190503T143804 DTSTART;TZID=Europe/Zurich:20190508T110000 SUMMARY:Seminar in probability theory: Roland Bauerschmidt (University of C ambridge) DESCRIPTION:The classical random walk isomorphism theorems relate the local time of a random walk to the square of a Gaussian free field. I will pres ent non-Gaussian versions of these theorems\, relating hyperbolic and hemi spherical sigma models (and their supersymmetric versions) to non-Markovia n random walks interacting through their local time. Applications include a short proof of the Sabot-Tarres limiting formula for the vertex-reinforc ed jump process (VRJP) and a Mermin-Wagner theorem for hyperbolic sigma mo dels and the VRJP. This is joint work with Tyler Helmuth and Andrew Swan. X-ALT-DESC:
The classical random walk isom orphism theorems relate the local time of a random walk to the square of a Gaussian free field. I will present non-Gaussian versions of these theore ms\, relating hyperbolic and hemispherical sigma models (and their supersy mmetric versions) to non-Markovian random walks interacting through their local time. Applications include a short proof of the Sabot-Tarres limitin g formula for the vertex-reinforced jump process (VRJP) and a Mermin-Wagne r theorem for hyperbolic sigma models and the VRJP. This is joint work wit h Tyler Helmuth and Andrew Swan.
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