Export citation

Export citation

Choose format for download:

Download Citation

    Interacting many-body non-Hermitian systems as Markov chains

    Zichang Hao, Wei Jie Chan*, and Ching Hua Lee†

    • *Contact author: wj_chan@nus.edu.sg
    • †Contact author: phylch@nus.edu.sg

    Phys. Rev. B 114, 014301 – Published 1 July, 2026

    DOI: https://doi.org/10.1103/b85t-vxhm

    Abstract

    Rich phenomenology emerges at the intersection of non-Hermiticity and many-body dynamics, yet physically realizable implementations remain challenging. In this work, we propose a general formalism that maps non-Hermitian many-body Hamiltonians to the Laplacians of Markov chains, such that wave-function amplitudes are reinterpreted as stochastic many-body configuration probabilities. Despite explicitly preserving all state transition processes and inheriting analogous non-Hermitian localization and state-space fragmentation, our Markov chain processes exhibit distinct steady-state behavior independently of energetic considerations that govern quantum evolution. We demonstrate our framework with two contrasting representative scenarios, one involving asymmetric (biased) propagation with exclusion interactions, and the other involving flipping pairs of adjacent spins (agents). These results reveal robust and distinctive signatures of non-Hermitian phenomena in classical stochastic settings such as ecological and social networks, and provide a versatile framework for studying nonreciprocal many-body dynamics across and beyond physics.

    Physics Subject Headings (PhySH)

    Authorization Required

    We need you to provide your credentials before accessing this content.

    Supplemental Material (Subscription Required)

    References (Subscription Required)

    Outline

    Information

    Sign In to Your Journals Account

    Filter

    Filter

    Article Lookup

    Enter a citation