YMSC String Group | Ling-Yan Hung

String Theory Group at YMSC

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Ling-Yan Hung

Professor, Yau Mathematical Sciences Center, Tsinghua University

Basic Information

Email: lyhung (at) tsinghua.edu.cn
Office: Shuangqing Complex Building B531

Research Areas

Mathematical physics, holography, conformal field theory, topological phases, tensor networks, generalized symmetries, and SymTFT.

Education

2001-2004, B.A., University of Oxford.
2004-2005, M.A./M.Phil., University of Cambridge.
2005-2009, Ph.D., University of Cambridge.

Employment

2022-present, Professor, Yau Mathematical Sciences Center, Tsinghua University.
2014-2022, Researcher, Department of Physics, Fudan University.
2012-2014, Postdoctoral Fellow, Department of Physics, Harvard University.
2009-2012, Postdoctoral Fellow, Perimeter Institute for Theoretical Physics.

Research Summary

Ling-Yan Hung connects holography, tensor networks, topological order, and categorical symmetries by treating emergence of spacetime and emergence of critical lattice models as related renormalization problems. Her recent work formulates AdS3/CFT2 as a symmetry-preserving quantum RG flow and uses BCFT ensembles and tensor networks to reconstruct emergent geometry and rational CFT data. In parallel, her studies of SymTFT boundaries, anyon condensation, and competing condensation channels show how categorical symmetry data can control both topological phases and the critical theories that appear at their interfaces.

Representative Publications

D. D. Blanco, H. Casini, L.-Y. Hung, R. C. Myers, “Relative Entropy and Holography,” JHEP 08 (2013) 060.
Z. Luo, J. Li, Z. Li, L.-Y. Hung, Y. Wan, X. Peng, J. Du, “Experimentally probing topological order and its breakdown through modular matrices,” Nature Phys. 14 (2018) 160.
L.-Y. Hung, W. Li, C. M. Melby-Thompson, “p-adic CFT is a holographic tensor network,” JHEP 04 (2019) 170.
L. Chen, X. Liu, L.-Y. Hung, “Emergent Einstein Equation in p-adic Conformal Field Theory Tensor Networks,” Phys. Rev. Lett. 127 (2021) 221602.
L.-Y. Hung, K. Ji, T. Wang, “Scrambling and entangling spinning particles,” JHEP 02 (2023) 197.
X. Zeng, L.-Y. Hung, “Bulk Operator Reconstruction in Topological Tensor Network and Generalized Free Fields,” Entropy 25 (2023) 1543.
K. Ji, L. Chen, L.-P. Yang, L.-Y. Hung, “Simplex tensor network renormalization group for boundary theory of 3+1D symTFT,” arXiv:2412.08374.
N. Bao, L.-Y. Hung, Y. Jiang, Z. Liu, “QG from SymQRG: AdS3/CFT2 Correspondence as Topological Symmetry-Preserving Quantum RG Flow,” arXiv:2412.12045.
L.-Y. Hung, Y. Jiang, B.-X. Lao, “Universal Structures and Emergent Geometry from Large-c BCFT Ensemble,” arXiv:2504.21660.