(Louie) Hong Yao

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I am a statistical physicist, and my work is guided by Philip W. Anderson’s idea that “more is different.” When many simple components interact, new laws and structures can emerge that are not obvious from the parts alone. In statistical mechanics, I focus on phase transitions, universality, and symmetries, using them to understand how macroscopic behavior becomes insensitive to microscopic details. In quantum computing and information, I use statistical-physics ideas to study how entanglement, correlations, and collective dynamics emerge in many-body quantum systems and how these structures can be used for computation and information processing. In machine learning, I aim to understand representations and learning dynamics in large models, treating them as evolving, high-dimensional systems shaped by optimization, data, and scale.

I earned my Ph.D. in theoretical physics at Virginia Tech (2018–2023) under Prof. Uwe C. Täuber, and my B.Sc. in Physics from Nankai University (2014–2018). I currently work as a predictive modeler at The Cincinnati Insurance Company.

News

Apr 11, 2026 New preprint on arXiv: A Minimal Model of Representation Collapse: Frustration, Stop-Gradient, and Dynamics.
Apr 06, 2026 Paper accepted at ACL 2026 (Main): Rhetorical Questions in LLM Representations: A Linear Probing Study.
Mar 26, 2026 Presented Towards Robust Evaluation of Visual Activity Recognition: Resolving Verb Ambiguity with Sense Clustering at EACL 2026 (virtually)!
Jan 04, 2026 Paper accepted at EACL 2026 (Findings): Towards Robust Evaluation of Visual Activity Recognition: Resolving Verb Ambiguity with Sense Clustering.
Sep 26, 2025 New preprint on arXiv: JE-IRT: A Geometric Lens on LLM Abilities through Joint Embedding Item Response Theory. arXiv:2509.22888

Selected Publications

  1. arXiv
    A Minimal Model of Representation Collapse: Frustration, Stop-Gradient, and Dynamics
    L. H. Yao, Y. Li, and S. Liu
    arXiv preprint arXiv:2604.09979, 2026
  2. ACL
    Rhetorical Questions in LLM Representations: A Linear Probing Study
    L. H. Yao, V. Anand, Y. Zhuang, and T. Jiang
    In Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics, 2026
  3. EACL
    Towards Robust Evaluation of Visual Activity Recognition: Resolving Verb Ambiguity with Sense Clustering
    L. H. Yao, N. Jarvis, and T. Jiang
    In Findings of the Association for Computational Linguistics: EACL, 2026
  4. arXiv
    JE-IRT: A Geometric Lens on LLM Abilities through Joint Embedding Item Response Theory
    L. H. Yao, N. Jarvis, T. Zhan, S. Ghosh, L. Liu, and T. Jiang
    arXiv preprint, 2025
  5. Quantum
    Stochastic Resetting in Discrete-time Quantum Dynamics: Steady States and Correlations in Few-qubit Systems
    S. Wald, L. H. Yao, T. Platini, C. Hooley, and F. Carollo
    Quantum, 2025
  6. Phys. Rev. E
    Coined Quantum Walks on the Line: Disorder, Entanglement and Localization
    L. H. Yao and S. Wald
    Physical Review E, 2023
  7. Phys. Rev. E
    Critical Dynamics of the Antiferromagnetic O(3) Nonlinear Sigma Model with Conserved Magnetization
    L. H. Yao and U. C. Täuber
    Physical Review E, 2022