Quantum Institute: Visitor Schedule

The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
For more information, contact Diego Dalvit.

Thursday, October 9, 2008
12:30 PM to 2 PM

Speaker: Florent Krzakala, ESPCI ParisTech

Technical Host:

TOPIC: A quantum cavity method for Ising models in transverse field

Abstract
When studying classical Ising systems, two tools are often very
useful: the heat-bath Monte-Carlo simulations that allows to obtain
precise results for a given model, and the so called Bethe-Peierls
mean field approximation, that has been generalized recently for
disordered models to the cavity method, that gives useful analytical
hint to the behavior of the system.

In this talk, I will discuss a way that allow to generalize these two
tools to quantum spin-1/2 models in a transverse field using the
continuous time Suzuki-Trotter representation. An efficient and
general heat-bath quantum Monte-Carlo scheme will be proposed, and the
cavity method will be applied on the Bethe lattice ferromagnet in a
transverse field.