Drag-induced skin effect in a Bose-Fermi mixture

Abstract:The non-Hermitian skin effect (NHSE) represents one of the most distinctive phenomena in non-Hermitian physics. Here, we uncover a new drag-induced NHSE mechanism in interacting Bose--Fermi mixtures where only bosons, but not fermions, experience asymmetric this http URL show that strong Bose--Fermi interactions enable fermions to inherit boundary accumulation through correlated bound this http URL interplay of interactions, quantum statistics, and non-Hermitian dynamics gives rise to an interaction-induced blockade mechanism, leading to highly asymmetric fermionic this http URL demonstrate that the drag-induced NHSE is dynamically stable and propose a feasible realization in ultracold Bose--Fermi mixtures with Floquet-engineered asymmetric this http URL results establish a qualitatively distinct route to the NHSE, where non-Hermitian localization is not generated by direct nonreciprocal hopping of the localized particles themselves, but emerges through the interaction-mediated transfer of non-Hermitian dynamics between different quantum species. This mechanism further provides a potential route toward species-selective control of localization and transport in hybrid quantum matter.

Quantum Gases (cond-mat.quant-gas); Quantum Physics (quant-ph)

arXiv:2606.03403 [cond-mat.quant-gas]

(or arXiv:2606.03403v2 [cond-mat.quant-gas] for this version)

https://doi.org/10.48550/arXiv.2606.03403 Focus to learn more arXiv-issued DOI via DataCite

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