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Wei Song

Professor, Yau Mathematical Sciences Center / Department of Mathematical Sciences, Tsinghua University

Basic Information

Email
wsong2014 (at) tsinghua.edu.cn
Office
Shuangqing Complex Building B530

Research Areas

Quantum gravity, mathematical physics, AdS3/CFT2, Kerr/CFT, warped CFT, flat holography, BMS symmetry, and holographic entanglement.

Education

  • 2004-2009, Ph.D., Institute of Theoretical Physics, University of Chinese Academy of Sciences.
  • 2000-2004, B.S., Nanjing University.

Employment

  • 2021-present, Professor, Department of Mathematical Sciences, Tsinghua University.
  • 2014-2020, Associate Professor, Yau Mathematical Sciences Center, Tsinghua University.
  • 2009-2014, Postdoctoral Fellow, Harvard University and Princeton University.

Research Summary

Wei Song studies three-dimensional quantum gravity, holography, and two-dimensional field theories with non-Lorentzian or irrelevant-deformation structures. Her recent work develops BMS, Carrollian, and Galilean symmetric field theories as alternatives to ordinary relativistic CFTs, and uses modular Hamiltonians, entanglement entropy, and correlation functions to probe their dynamics. In parallel, her work on asymptotic symmetries from the string worldsheet, TsT/TTbar holography, JTbar and TTbar deformations, and glue-on AdS constructions connects nonstandard boundary conditions and irrelevant deformations to black-hole physics and holographic geometry.

Representative Publications

  • M. Guica, T. Hartman, W. Song, A. Strominger, “The Kerr/CFT Correspondence,” Phys. Rev. D 80 (2009) 124008, arXiv:0809.4266.
  • G. Compère, W. Song, A. Strominger, “New Boundary Conditions for AdS3,” JHEP 05 (2013) 152.
  • T. Azeyanagi, D. M. Hofman, W. Song, A. Strominger, “The Spectrum of Strings on Warped AdS3 x S3,” JHEP 04 (2013) 078.
  • G. Compère, J. I. Jottar, W. Song, “Observables and Microscopic Entropy of Higher Spin Black Holes,” JHEP 11 (2013) 054.
  • H. Jiang, W. Song, Q. Wen, “Entanglement Entropy in Flat Holography,” JHEP 07 (2017) 142.
  • L. Apolo, W. Song, “Strings on warped AdS3 via T Jbar deformations,” JHEP 10 (2018) 165.
  • W. Cui, H. Shu, W. Song, J. Wang, “Correlation functions in the TsT/TTbar correspondence,” JHEP 04 (2024) 017, arXiv:2304.04684.
  • P.-X. Hao, W. Song, Z. Xiao, X. Xie, “BMS-invariant free fermion models,” Phys. Rev. D 109 (2024) 025002.
  • P.-X. Hao, W.-X. Lai, W. Song, Z. Xiao, “Modular Hamiltonian and entanglement entropy in the BMS free fermion theory,” JHEP 02 (2026) 099, arXiv:2507.10503.

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