title: Heat transport in active harmonic chains.
abstract: We show that a harmonic lattice model with amplifying and attenuating elements, when coupled to two thermal baths, exhibits unique heat transport properties. Some of these novel features include anomalous nonequilibrium steady-state heat currents, negative differential thermal conductance, as well as nonreciprocal heat transport. We find that when these elements are arranged in a PT-symmetric manner, the domain of existence of the nonequilibrium steady state is maximized. We propose an electronic experimental setup based on resistive-inductive-capacitive (RLC) transmission lines, where our predictions can be tested.
authors.affiliation: Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA.
authors.forename: Mei C
authors.initials: MC
authors.lastname: Zheng
authors.forename: Fred M
authors.initials: FM
authors.lastname: Ellis
authors.forename: Tsampikos
authors.initials: T
authors.lastname: Kottos
authors.forename: Ragnar
authors.initials: R
authors.lastname: Fleischmann
authors.forename: Theo
authors.initials: T
authors.lastname: Geisel
authors.forename: Tomaž
authors.initials: T
authors.lastname: Prosen