BEGIN:VCALENDAR VERSION:2.0 X-WR-CALNAME;VALUE=TEXT:Online: Seminar, Bruno Nachtergaele (University of California Davis), Dimerization in Quantum Spin Chains With O(n) Symmetry PRODID:-//Harvard events data//EN BEGIN:VEVENT UID:event_1582799_0 SUMMARY:Online: Seminar, Bruno Nachtergaele (University of California Davis), Dimerization in Quantum Spin Chains With O(n) Symmetry DESCRIPTION:

Location: Zoom https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09

Time: Tuesday, April 27, 2021, 10:00 AM (Eastern US), 15:00 (UK/Eire), 16:00 (Central Europe), 22:00 (China)

Title: Dimerization in Quantum Spin Chains With O(n) Symmetry

Abstract: We consider spin-S quantum spin chains with a family of O(2S+1)-invariant nearest-neighbor interactions and discuss the ground state phase diagram of this family of models. Using a graphical representation for the partition function, we give a proof of dimerization for an open region in the phase diagram, for all sufficiently large values of S. (Joint work with Jakob Bjoernberg, Peter Muehlbacher, and Daniel Ueltschi).

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LOCATION:Zoom STATUS:CONFIRMED DTSTART:20210427T140000Z DTEND:20210427T140000Z END:VEVENT END:VCALENDAR