Online: Seminar, Bruno Nachtergaele (University of California Davis), Dimerization in Quantum Spin Chains With O(n) Symmetry


Tuesday, April 27, 2021, 10:00am



Bruno Nachtergaele

Location: Zoom

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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