BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Sabre//Sabre VObject 4.6.0//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:news1106@dmi.unibas.ch DTSTAMP;TZID=Europe/Zurich:20201116T100656 DTSTART;TZID=Europe/Zurich:20201209T140000 SUMMARY:Seminar Analysis and Mathematical Physics: Lea Bossmann (IST Austri a) DESCRIPTION:Abstract. \\r\\nWe consider a system of N bosons in the mean-f ield scaling regime in an external trapping potential. We derive an asymp totic expansion of the low-energy eigenstates and the corresponding ener gies\, which provides corrections to Bogoliubov theory to any order in 1/ N. We show that the structure of the ground state and of the non-degenera te low-energy eigenstates is preserved by the dynamics ifthe external trap is switched off. This talk is based on joint works with Sören Petrat\, Peter Pickl\, Robert Seiringer\, and Avy Soffer (arXiv:1912.11004 and arX iv:2006.09825). X-ALT-DESC:

Abstract. \;

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We consider a system of N bosons in the mean-field scaling \;regime in an external trapping potential. We derive an asymptotic \;expansion of the low-energy eigenstates and the corresponding \;energies\, which provides corrections to Bogoliubov t heory to any order \;in 1/N. We show that the structure of the ground state and of the \;non-degenerate low-energy eigenstates is preserved by the dynamics if
the external trap is switched off. This talk is ba sed on joint works \;with Sören Petrat\, Peter Pickl\, Robert Seiring er\, and Avy Soffer \;(arXiv:1912.11004 and arXiv:2006.09825).

DTEND;TZID=Europe/Zurich:20201209T150000 END:VEVENT END:VCALENDAR