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arXiv · 2601.20938

Non-Equilibrium Phase Transition in a Boundary-Driven Dissipative Fermionic Chain

Hao Chen·Wucheng Zhang·Manas Kulkarni·Abhinav Prem
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Abstract

We demonstrate that a boundary-localized periodic (Floquet) drive can induce nontrivial long-range correlations in a non-interacting fermionic chain which is additionally subject to boundary dissipation. Surprisingly, we find that this phenomenon occurs even when the corresponding isolated bulk is in a trivial gapped phase with exponentially decaying correlations. We argue that this boundary-drive induced non-equilibrium transition (as witnessed through the correlation matrix) is driven by a resonance mechanism whereby the drive frequency bridges bulk energy gaps, allowing boundary-injected particles and holes to propagate and mediate long-range correlations into the bulk. We also numerically establish that when the drive bridges a particle-hole gap, the induced long-range order scales as a power law with the bulk pairing potential ($\chi \sim \gamma^2$). Our results highlight the potential of localized coherent driving for generating macroscopic order in open quantum systems.

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Hao Chen, Wucheng Zhang, Manas Kulkarni, Abhinav Prem. 2026-01-28. Non-Equilibrium Phase Transition in a Boundary-Driven Dissipative Fermionic Chain. https://arxiv.org/abs/2601.20938

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