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Phase transitions and critical phenomena
要旨:
Non-thermal correlations of strongly correlated electron systems and the
far-from-equilibrium properties of phases of condensed matter have
become a topical research area. Here, an overview of the nonlinear
dynamics found near continuous zero-temperature phase transitions within
the context of effective temperatures is presented. In particular, we
focus on models of critical Kondo destruction. Such a quantum critical
state, where Kondo screening is destroyed in a critical fashion, is
realized in a number of rare earth intermetallics. This raises the
possibility of experimentally testing for the existence of
fluctuation-dissipation relations far from equilibrium in terms of
effective temperatures. Finally, we present an analysis of a
non-interacting, critical reference system, the pseudogap resonant level
model, in terms of effective temperatures and contrast these results
with those obtained near interacting quantum critical points. (C) 2015
Elsevier B.V. All rights reserved.
