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 hopping.We show that strong Bose--Fermi interactions enable fermions to inherit boundary accumulation through correlated bound states.The interplay of interactions, quantum statistics, and non-Hermitian dynamics gives rise to an interaction-induced blockade mechanism, leading to highly asymmetric fermionic transport.We demonstrate that the drag-induced NHSE is dynamically stable and propose a feasible realization in ultracold Bose--Fermi mixtures with Floquet-engineered asymmetric tunneling.Our 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.
Related
- Bethe-ansatz study of the Bose-Fermi mixture
- Quantum critical superconductivity in a dense fermi dilute bose mixture close to mechanical instability
- Microscopic Theory of Drag in a Bose Condensate Interacting with a Moving Reservoir
- Mixed bubbles in a binary mixture of spin-1 Bose-Einstein condensates
- Supersymmetry of dissipative Bose-Fermi systems with application to Jaynes-Cummings and Dicke models
BibTeX
@misc{liu2026draginduced,
title = {{Drag-induced skin effect in a Bose-Fermi mixture}},
author = {Wenjie Liu and Yee Sin Ang and Ching Hua Lee and Yi Qin},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2606.03403},
eprint = {2606.03403},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.03403},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Drag-induced skin effect in a Bose-Fermi mixture
AU - Wenjie Liu
AU - Yee Sin Ang
AU - Ching Hua Lee
AU - Yi Qin
PY - 2026
DA - 2026/09/13
PB - arXiv
DO - 10.48550/arxiv.2606.03403
UR - https://arxiv.org/abs/2606.03403
AB - 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 hopping.We show that strong Bose--Fermi interactions enable fermions to inherit boundary accumulation through correlated bound states.The interplay of interactions, quantum statistics, and non-Hermitian dynamics gives rise to an interaction-induced blockade mechanism, leading to highly asymmetric fermionic transport.We demonstrate that the drag-induced NHSE is dynamically stable and propose a feasible realization in ultracold Bose--Fermi mixtures with Floquet-engineered asymmetric tunneling.Our 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.
ER -