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Thursday, July 18, 2013
12:30 PM - 2:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Quantum Lunch

Dynamics of broken symmetry

Julian Sonner
Massachusetts Institute of Technology

I will explore the far from equilibrium response of a superfluid using the gauge-gravity duality (also known as `AdS/CFT'). This duality, mapping a quantum critical theory to one involving gravity, has emerged in recent years as a powerful tool in the study of strongly coupled systems. Using this approach I will establish the dynamical phase diagram corresponding to quantum quenches of the order parameter source field. The resulting setup can be solved in great detail even far from equilibrium and gives rise to three distinct dynamical regimes (phases). I will end with some comments about the genericity of this behavior found for time-reversal invariant systems with broken symmetry.

Host: Adolfo del Campo