Condensed Matter Seminar Series
Exact and Simple Results for the XYZ and Strongly Interacting Fermion Chains
University of Virginia
Friday October 18, 1:30 pm, Room 298, Physics Building
NOTE IRREGULAR DAY AND TIME!
ago, Onsager, Kaufman and Yang computed the spontaneous magnetization
in the Ising model. Their result is remarkable not only in that it can
be computed exactly, but in that the resulting formula is extremely
simple. I will explain how similar results occur in models without
free-fermion structure as well, for example in the XYZ spin chain when
the couplings obey J_xJ_y + J_yJ_z + J_x J_z=0. I will also explain how
(a potentially hidden) supersymmetry plays a crucial role.
Host: Matt Hastings and Harold Baranger