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gr-qc2026★ 1 cited
Numerical simulations of primordial black hole formation via delayed first-order phase transitions
Zhuan Ning, Xiang-Xi Zeng, Rong-Gen Cai +1
We perform fully nonlinear, spherically symmetric numerical simulations of superhorizon false-vacuum-domain (FVD) collapse in a coupled gravity-scalar-fluid system to study primord…
gr-qc2025★ 6 cited
Third law of repetitive electric Penrose processes
Li Hu, Rong-Gen Cai, Shao-Jiang Wang
Recently, Ruffini et al. [Phys. Rev. Lett. 134 (2025) 8, 081403] pointed out that the repetitive Penrose process cannot drain the entire extractable energy of a Kerr black hole. In…