Basic Information
- cmchang (at) tsinghua.edu.cn
- Office
- Shuangqing Complex Building C643
Chi-Ming Chang
Associate Professor, Yau Mathematical Sciences Center, Tsinghua University
Research Areas
Quantum field theory, string theory, and quantum gravity, with emphasis on supersymmetric field theory, black-hole microstates, holographic duality, higher-spin theory, topological defects, and generalized symmetries.
Education
- 2008-2014, Ph.D., Harvard University.
- 2003-2006, B.S., Tsinghua University.
Employment
- 2025-present, Associate Professor, Yau Mathematical Sciences Center, Tsinghua University.
- 2019-2025, Assistant Professor, Yau Mathematical Sciences Center, Tsinghua University.
- 2016-2019, Postdoctoral Fellow, University of California, Davis.
- 2014-2016, Postdoctoral Fellow, University of California, Berkeley.
Research Summary
Chi-Ming Chang studies exact structures in supersymmetric quantum field theory and quantum gravity, with a recurring focus on how microscopic field-theory data organize black-hole states and holographic spectra. His recent work develops this question through indices and cohomological methods, including BMN matrix quantum mechanics, D1-D5 and SYK systems, Q-cohomology, chiral algebras, and S-duality. Rather than treating these as separate topics, the common thread is to understand when highly constrained algebraic or topological sectors of a quantum field theory are sufficient to reveal stringy degrees of freedom, black-hole microstates, or non-invertible and defect structures that survive along renormalization-group flows.
Representative Publications
- C.-M. Chang, S. Minwalla, T. Sharma, X. Yin, “ABJ Triality: from Higher Spin Fields to Strings,” J. Phys. A 46 (2013) 214009, arXiv:1207.4485.
- C.-M. Chang, X. Yin, “1/16 BPS states in N=4 super-Yang-Mills theory,” Phys. Rev. D 88 (2013) 106005, arXiv:1305.6314.
- C.-M. Chang, Y.-H. Lin, “Carving Out the End of the World or Superconformal Bootstrap in Six Dimensions,” JHEP 08 (2017) 128, arXiv:1705.05392.
- C.-M. Chang, Y.-H. Lin, S.-H. Shao, Y. Wang, X. Yin, “Topological Defect Lines and Renormalization Group Flows in Two Dimensions,” JHEP 01 (2019) 026, arXiv:1802.04445.
- C.-M. Chang, S. Colin-Ellerin, C. Peng, M. Rangamani, “Disordered Vector Models: From Higher Spins to Incipient Strings,” Phys. Rev. Lett. 129 (2022) 011603, arXiv:2112.09157.
- C.-M. Chang, Y.-H. Lin, “Words to describe a black hole,” JHEP 02 (2023) 109, arXiv:2209.06728.
- C.-M. Chang, Y.-H. Lin, “Holographic covering and the fortuity of black holes,” arXiv:2402.10129.