Gauge-invariant and anyonic-symmetric autoregressive neural network for quantum lattice models

Di Luo, Zhuo Chen, Kaiwen Hu, Zhizhen Zhao, Vera Mikyoung Hur, Bryan K. Clark

Research output: Contribution to journalArticlepeer-review


Symmetries such as gauge invariance and anyonic symmetry play a crucial role in quantum many-body physics. We develop a general approach to constructing gauge-invariant or anyonic-symmetric autoregressive neural networks, including a wide range of architectures such as transformer and recurrent neural network, for quantum lattice models. These networks can be efficiently sampled and explicitly obey gauge symmetries or anyonic constraint. We prove that our methods can provide exact representation for the ground and excited states of the two- and three-dimensional toric codes, and the X-cube fracton model. We variationally optimize our symmetry-incorporated autoregressive neural networks for ground states as well as real-time dynamics for a variety of models. We simulate the dynamics and the ground states of the quantum link model of U(1) lattice gauge theory, obtain the phase diagram for the two-dimensional Z2 gauge theory, determine the phase transition and the central charge of the SU(2)3 anyonic chain, and also compute the ground-state energy of the SU(2) invariant Heisenberg spin chain. Our approach provides powerful tools for exploring condensed-matter physics, high-energy physics, and quantum information science.

Original languageEnglish (US)
Article number013216
JournalPhysical Review Research
Issue number1
StatePublished - Jan 2023

ASJC Scopus subject areas

  • General Physics and Astronomy


Dive into the research topics of 'Gauge-invariant and anyonic-symmetric autoregressive neural network for quantum lattice models'. Together they form a unique fingerprint.

Cite this