Harvard Condensed Matter Theory Seminars
Theory of equilibrium quantum phase transitions
has been around for a while, but quantum phase transitions in systems
driven out of equilibrium have not been studied much. Here I will
present a theory of nonequilibrium quantum criticality in
open (coupled to reservoirs) electronic systems. I will discuss
the cases of itinerant Ising and Heisenberg magnets with nonequilibrium
provided by current flow across the system. Both departures from
equilibrium at conventional (equilibrium) quantum critical points and
the physics of phase transitions induced by the nonequilibrium
drive will be discussed.
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