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:0-1190@lptms.universite-paris-saclay.fr DTSTART;TZID=Europe/Paris:20261028T110000 DTEND;TZID=Europe/Paris:20261028T120000 DTSTAMP:20261016T133637Z URL:http://www.lptms.universite-paris-saclay.fr/seminars/informal-quantum- seminar-ashish-kumar-singh-sissa/ SUMMARY:Informal Quantum Seminar: Ashish Kumar Singh - Salle des séminaire s du FAST et du LPTMS\, bâtiment Pascal n°530 - 28 Oct 26 11:00 DESCRIPTION:Polymer Structure\, Dynamics\, and Topology: From Explicit-Solv ent Solutions to Sticky-Growth Globules\nAshish Kumar Singh (Scuola Intern azionale Superiore di Studi Avanzati)\n \;\nWe are interested in how p olymer architecture and solvent conditions affect polymer behavior\, and h ow compactness relates to knotting. First\, we study dilute linear and rin g polymers using dissipative particle dynamics with explicit hydrodynamic interactions. Although ring polymers have an additional closure constraint \, our results show that solvent quality has a stronger influence under th e conditions studied: polymers remain dispersed and mobile in good solvent \, while poor-solvent attractions promote partially collapsed aggregates a nd slower dynamics. We are also studying globular structures generated usi ng a history-dependent\, self-avoiding sticky random walk on a three-dimen sional lattice. Increasing the stickiness produces more compact structures \, with fractal dimensions above 2 and lower knotting measures than ordina ry self-avoiding walks. This work helps us explore the relationship betwee n compactness and topology.\n \;\n\n \; 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:20261025T020000 TZOFFSETFROM:+0200 TZOFFSETTO:+0100 TZNAME:CET END:STANDARD END:VTIMEZONE END:VCALENDAR