6 papers
Constraining interacting dark energy models with black hole superradiance
Zhen-Hong Lyu, Rong-Gen Cai, Shao-Jiang Wang +1
The recent preference for a dynamical dark energy (DE) from the Dark Energy Spectroscopic Instrument seems to call for interactions between DE and dark matter (DM), either from dir…
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…
Scalar-induced gravitational waves with non-Gaussianity up to all orders
Xiang-Xi Zeng, Zhuan Ning, Rong-Gen Cai +1
Scalar-induced gravitational waves (SIGWs) are ubiquitous in many early-Universe processes accompanied by non-Gaussianity; while Gaussian perturbation can generate significant SIGW…
Resolving the Planck-DESI tension by nonminimally coupled quintessence
Jia-Qi Wang, Rong-Gen Cai, Zong-Kuan Guo +1
The Planck measurement of the cosmic microwave background (CMB) has established the -cold-dark-matter (CDM) model as the concordant model along with other observations. Howev…
The DESI DR1/DR2 evidence for dynamical dark energy is biased by low-redshift supernovae
Lu Huang, Rong-Gen Cai, Shao-Jiang Wang
Recently, a preference for dynamical dark energy has been reported by the Dark Energy Spectroscopic Instrument (DESI) collaboration, which has inspired hot debates on new…
Narrowing down the Hubble tension to the first two rungs of distance ladders
Lu Huang, Rong-Gen Cai, Shao-Jiang Wang +2
The decade-persistent Hubble tension has become a crisis of modern cosmology between the early-Universe extrapolation from globally fitting the standard CDM to Planck-CMB m…