Canceled: Applied Physics/Physics Colloquium: Vedika Khemani - Quantum Matter Out of Equilibrium

This event is cancelled due to Democracy Day.

Stanford University 

APPLIED PHYSICS/PHYSICS COLLOQUIUM 

     Tuesday, November 8, 2022 3:30 p.m. 

On campus in Hewlett Teaching Center, Rm. 200 

Refreshments served in the courtyard between Varian and PAB at 4:30 p.m.

Vedika Khemani

“Quantum Matter Out of Equilibrium”

A central goal of condensed matter physics is to study the universal emergent properties of macroscopic quantum systems with large numbers of interacting particles. Due to a variety of conceptual and experimentally motivated reasons, the traditional approach of many-body physics is largely built around the study of low-temperature and near-equilibrium properties of time independent Hamiltonians. A confluence of developments across a range of subfields --- particularly experimental advances in building programmable quantum devices --- have opened up a vast new territory of studying many-body phenomena in completely novel regimes: highly excited, "post Hamiltonian", and far from equilibrium. The natural evolutions implemented by these novel experiments are out-of-equilibrium dynamics generated by quantum circuits of unitary gates, possibly interrupted by measurements, and starting from initial states that are not low energy in any useful sense. I will describe some highlights of an active research program to advance many-body theory beyond the regime of near-equilibrium time-independent Hamiltonians, with a view towards uncovering novel emergent phenomena in the non-equilibrium dynamics of many-body systems, and the physics of quantum circuits.