Zhenmin Zeng
PhD
Research interests
My research focuses on gravitational waves from the early Universe, generated by inflation, cosmological phase transitions and topological defects. I am interested in the connections between primordial density perturbations, induced gravitational waves, and primordial black hole formation. I study these phenomena using analytical and semi-analytical approaches within cosmological perturbation theory, with particular attention to effective descriptions and non-equilibrium dynamics. More recently, I have developed interest in using real-time path integral methods to address problems traditionally formulated via imaginary-time instantons.
Publications
Teaching
Selected publications:
- Z.-M. Zeng, C.-J. Fang, and Z.-K. Guo, Critical behavior and ultraviolet scaling of induced gravitational waves from an early matter-dominated era, Phys. Rev. D 112, 123517 (2025). https://doi.org/10.1103/l9b6-kjhp
- H.-W. Hu, C.-J. Fang, Z.-M. Zeng, and Z.-K. Guo, Bispectrum of induced gravitational waves in the poltergeist mechanism, Phys. Rev. D 112, L061303 (2025). https://doi.org/10.1103/PhysRevD.112.L061303
- Z.-M. Zeng and Z.-K. Guo, Phase transition catalyzed by primordial black holes, Phys. Rev. D 110, L041301 (2024). https://doi.org/10.1103/PhysRevD.110.L041301
- Z.-M. Zeng, J. Liu, and Z.-K. Guo, Enhanced curvature perturbations from spherical domain walls nucleated during inflation, Phys. Rev. D 108, 063005 (2023). https://doi.org/10.1103/PhysRevD.108.063005
- Z.-Z. Peng, Z.-M. Zeng, C. Fu, and Z.-K. Guo, Generation of gravitational waves in dynamical Chern–Simons gravity, Phys. Rev. D 106, 124044 (2022). https://doi.org/10.1103/PhysRevD.106.124044
Publications affiliated with ITMP:
All publications
