Transport through interacting defects and lack of thermalisation
Giuseppe Del Vecchio Del Vecchio, Andrea De Luca, Alvise Bastianello
SciPost Phys. 12, 060 (2022) · published 14 February 2022
- doi: 10.21468/SciPostPhys.12.2.060
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Abstract
We consider 1D integrable systems supporting ballistic propagation of excitations, perturbed by a localised defect that breaks most conservation laws and induces chaotic dynamics. Focusing on classical systems, we study an out-of-equilibrium protocol engineered activating the defect in an initially homogeneous and far from the equilibrium state. We find that large enough defects induce full thermalisation at their center, but nonetheless the outgoing flow of carriers emerging from the defect is non-thermal due to a generalization of the celebrated Boundary Thermal Resistance effect, occurring at the edges of the chaotic region. Our results are obtained combining ab-initio numerical simulations for relatively small-sized defects, with the solution of the Boltzmann equation, which becomes exact in the scaling limit of large, but weak defects.
Cited by 11
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 King's College London [KCL]
- 2 CY Cergy Paris Université / CY Cergy Paris University
- 3 Technische Universität München / Technical University of Munich [TUM]
- 4 Munich Center for Quantum Science and Technology [MCQST]