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:0-1130@lptms.universite-paris-saclay.fr DTSTART;TZID=Europe/Paris:20260610T110000 DTEND;TZID=Europe/Paris:20260610T120000 DTSTAMP:20260528T081228Z URL:http://www.lptms.universite-paris-saclay.fr/seminars/pieter-hendrik-wi llem-van-der-hoek-sissa-trieste/ SUMMARY:Pieter Hendrik Willem Van Der Hoek (SISSA\, Trieste) - Salle des s éminaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 10 Juin 26 11:0 0 DESCRIPTION:Coherent Modeling of Genome-like Tightly Double-Folded Ring Pol ymers and Their Underlying Tree Structure\nPieter Hendrik Willem Van Der H oek (SISSA\, Trieste)\n \;\nCircular bacterial DNA can release torsion al stress and compactify through supercoiling\, forming superhelical struc tures that often branch into tree-like configurations. I will present a co mputationally efficient modelling strategy for sampling genome-like polyme rs based on this tree-like geometry. This approach leverages a powerful Mo nte Carlo method that efficiently samples randomly branched trees and tigh tly wraps them with ring polymers. Its validity follows from exact counts of the accessible states of randomly branched polymers and tightly double- folded ring polymers in idealized settings\, together with a consistent tr eatment of interactions at the tree level. In the last part of my talk\, I will show that this approach enables us to obtain statistics that match e xperimental data over several orders of magnitude. Collaborators: Angelo R osa (SISSA\, Trieste)\, Ralf Everaers (ENS\, Lyon)\, Elham Ghobadpour (ENS \, Lyon). 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