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Condensed Matter Seminars

ics Condensed Matter
Thursday, April 7, 2016
1:00 PM
Physics Building, Room 313
Note special time.
Yasu Takano [Host: Seunghun Lee]
University of Florida
"Spin-1/2 Heisenberg antiferromagnet in one dimension"

The one-dimensional spin-1/2 Heisenberg model is one of the few exactly solvable models in physics. When the interaction is antiferromagnetic, the ground state of this model is a Tomonaga-Luttinger liquid, in which dynamic and static properties are inextricably linked. Low-energy excitations are spinons, which are fermions, instead of bosonic magnons, with a unique gapless dispersion. These and other properties of the model have been extensively studied since the pioneering work by Bethe, published in 1931. This seminar describes our recent experiment that puts some of the theoretical predictions to tests.

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