Lab Home | Phone | Search
	Center for Nonlinear Studies
	Home  ▶ People   Current   Postdocs   Visitors   Students   Research   Publications  ▶ Conferences   Workshops   Sponsorship  ▶ Talks   Seminars   Postdoc Seminars Archive   Quantum Lunch   Quantum Lunch Archive   P/T Colloquia   Archive   Ulam Scholar     Postdoc Nominations  ▶ Students   Student Program  ▶ Visitors   Description   Past Visitors  ▶ Services   General     History of CNLS     Maps, Directions   CNLS Office   T-Division   LANL				Thursday, May 14, 20093:00 PM - 4:00 PMBuilding 524 Conference Room (formerly T-11) Seminar Many particle generalization of the Landau-Zener problem Prof. Victor GurarieUniversity of Colorado Boulder, Department of Physics and Astronomy An old theorem in quantum mechanics states that if the parameters of a system are changed sufficiently slowly, the system remains in its ground state. However, if the system is large, a natural question arises: how slow is slow enough. In this talk, I will introduce an interesting many particle system which does not want to stay in its ground state unless its parameters change at an exceedingly slow rate. The system, a version of a time-dependent Dicke model, arises in a variety of contexts in cold atoms, quantum optics, and condensed matter physics. Host: Nikolai Sinitsyn (5-3175)