Unique signatures in nonequilibrium physics of topological and otherwise unusual systems

Event Dates: 

Friday, February 23, 2018 - 10:30am

CTQM Seminar Type: 

  • CTQM Seminar

Seminar Location: 

  • Duane Physics Room G126

Speaker Name(s): 

Joel Moore

Speaker Affiliation(s): 

UC Berkeley

Abstract, Event Details: 

Physicists from many fields are currently seeking to understand how universal physics emerges in dynamics beyond the standard paradigms of equilibrium and linear response.  This talk discusses two examples where nonequilibrium physics is clearly richer than linear response, while still being captured well by reasonably simple theories.  The first example explains how a simple topological material, the Weyl semimetal, is similar to other materials in linear electromagnetic response but shows interesting differences such as quantized injection current at second order.  The second example covers how one-dimensional systems, such as the Lieb-Liniger gas familiar from atomic physics, can show an unusual type of highly constrained hydrodynamics.  This includes both exact tractable relations for some quantities and a powerful semiclassical approach for general flows through a Boltzmann-like equation.

Research Category: