3 papers
gr-qc2026
Loss of the scaling attractor in self-gravitating domain wall networks
Zhen-Min Zeng
Domain-wall(DW) networks are known to approach a relativistic scaling regime on fixed radiation- and matter-dominated backgrounds, forming the basis of the no-frustration conjectur…
gr-qc2025
Critical behavior and ultraviolet scaling of induced gravitational waves from an early matter-dominated era
Zhen-Min Zeng, Cheng-Jun Fang, Zong-Kuan Guo
Critical behavior and ultraviolet scaling of induced gravitational waves (GWs) from an early matter-dominated (eMD) era are studied in the context of primordial black hole evaporat…
gr-qc2025
Bispectrum of induced gravitational waves in the poltergeist mechanism
Han-Wen Hu, Cheng-Jun Fang, Zhen-Min Zeng +1
In the poltergeist mechanism the enhancement of induced gravitational waves (GWs) occurs due to a sudden transition from an early matter-dominated era to the radiation-dominated er…