Basic Information
- pxhao (at) tsinghua.edu.cn
- Office
- Shuangqing Complex Building A517
Pengxiang Hao
Postdoctoral Fellow, Yau Mathematical Sciences Center, Tsinghua University
Research Areas
Theoretical physics, quantum gravity, quantum field theory, and holographic duality.
Research Summary
Pengxiang Hao studies three-dimensional flat-space, Carrollian, Galilean, and BMS holography, where the usual relativistic conformal symmetry is replaced by non-Lorentzian symmetry algebras. His recent work develops bulk reconstruction in Flat3/CCFT2 and relates it to flat limits of (A)dS3/CFT2, while parallel projects analyze BMS-invariant free fields, modular Hamiltonians, entanglement entropy, and Carrollian-Galilean conformal blocks. Work on AdS/BCFT, de Sitter islands, and glue-on AdS for TTbar-deformed CFTs further connects these nonstandard holographic limits to entanglement and boundary-gravity constructions.
Representative Publications
- P.-X. Hao, N. Ogawa, T. Takayanagi, T. Waki, “Flat space holography via AdS/BCFT,” JHEP 10 (2025) 159, arXiv:2509.00652.
- L. Apolo, P.-X. Hao, W.-X. Lai, W. Song, “Extremal surfaces in glue-on AdS/T Tbar holography,” JHEP 01 (2024) 054, arXiv:2311.04883.
- P.-X. Hao, W. Song, Z. Xiao, X. Xie, “BMS-invariant free fermion models,” Phys. Rev. D 109 (2024) 025002, arXiv:2211.06927.
- L. Apolo, P.-X. Hao, W.-X. Lai, W. Song, “Glue-on AdS holography for T Tbar-deformed CFTs,” JHEP 06 (2023) 117, arXiv:2303.04836.
- P.-X. Hao, W. Song, X. Xie, Y. Zhong, “BMS-invariant free scalar model,” Phys. Rev. D 105 (2022) 125005, arXiv:2111.04701.