Physics Colloquium - Friday, March 31th, 2006, 4:00 P.M.

E300 Math/Science Center; Refreshments at 3:30 P.M. in Room E200

Peter Young
University of California, Santa Cruz

Do Spin Glasses have Phase Transitions?

The mean field theory of spin glasses predicts that there is a sharp phase transition both in zero magnetic field and in the presence of a field (the AT line). The latter is particularly surprising because this transition to a glassy state occurs without a change of symmetry. In this talk I will use Monte Carlo simulations combined with finite-size scaling to investigate whether these transitions occur in real systems.