Phase transitions of wave packet dynamics in disordered non-Hermitian systems
Helene Spring, Viktor Könye, Fabian A. Gerritsma, Ion Cosma Fulga, Anton R. Akhmerov
SciPost Phys. 16, 120 (2024) · published 3 May 2024
- doi: 10.21468/SciPostPhys.16.5.120
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Abstract
Disorder can localize the eigenstates of one-dimensional non-Hermitian systems, leading to an Anderson transition with a critical exponent of 1. We show that, due to the lack of energy conservation, the dynamics of individual, real-space wave packets follows a different behavior. Both transitions between localization and unidirectional amplification, as well as transitions between distinct propagating phases become possible. The critical exponent of the transition is close to 1/2 in propagating-propagating and (de)localization transitions.
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Helene Spring,
- 2 Viktor Könye,
- 1 Fabian A. Gerritsma,
- 2 Ion Cosma Fulga,
- 1 Anton R. Akhmerov
- 1 Technische Universiteit Delft / Delft University of Technology [TU Delft]
- 2 Würzburg-Dresden Cluster of Excellence [ct.qmat]
Funders for the research work leading to this publication