136 citations · 396 across the 9 of their papers we have counts for
9 papers
Dark Energy and Neutrino Superfluids
Andrea Addazi, Salvatore Capozziello, Qingyu Gan +1
We show that the neutrino mass, the dark matter and the dark energy can be explained in a unified framework, postulating a new invisible Born-Infeld field, which we name "non-linea…
Induced Gravitational Waves from Multi-Sound Speed Resonances during Cosmological Inflation
Andrea Addazi, Salvatore Capozziello, Qingyu Gan
We explore the possibility of multi-parametric resonances from time varying sound speed during cosmological inflation. In particular, we fix our set-up to the simpler case beyond a…
Photon Ring and Observational Appearance of a Hairy Black Hole
Qingyu Gan, Peng Wang, Houwen Wu +1
Recently, the image of a Schwarzschild black hole with an accretion disk has been revisited, and it showed that the "photon ring", defined as highly bent light rays that intersect…
Photon Spheres and Spherical Accretion Image of a Hairy Black Hole
Qingyu Gan, Peng Wang, Houwen Wu +1
In this paper, we first consider null geodesics of a class of charged, spherical and asymptotically flat hairy black holes in an Einstein-Maxwell-scalar theory with a non-minimal c…
NANOGrav results and Dark First Order Phase Transitions
Andrea Addazi, Yi-Fu Cai, Qingyu Gan +2
The recent NANOGrav evidence of a common-source stochastic background provides a hint to Gravitational Waves (GW) radiation from the Early Universe. We show that this result can be…
Strong Cosmic Censorship for a Scalar Field in a Logarithmic-de Sitter Black Hole
Yiqian Chen, Qingyu Gan, Guangzhou Guo
It has been shown that the quasinormal modes of perturebated fields can be used to investigate the validity of strong cosmic censorship (SCC). Relevant issues for Reissner-Nordstro…
Strong Cosmic Censorship for a Scalar Field in a Born-Infeld-de Sitter Black Hole
Qingyu Gan, Guangzhou Guo, Peng Wang +1
It has been shown that the Strong Cosmic Censorship (SCC) can be violated by a scalar field in a near-extremal Reissner-Nordstrom-de Sitter black hole. In this paper, we investigat…
Temperature Dependence of In-plane Resistivity and Inverse Hall Angle in NLED Holographic Model
Qingyu Gan, Peng Wang, Haitang Yang
In the strange metal phase of the high- cuprates, it is challenging to explain the linear temperature dependence of the in-plane resistivity and the quadratic temperature de…
The modified first laws of thermodynamics of anti-de Sitter and de Sitter space-times
Deyou Chen, Qingyu Gan, Jun Tao
We modify the first laws of thermodynamics of a Reissner-Nordstrom anti-de Sitter black hole and a pure de Sitter space-time by the surface tensions. The corresponding Smarr relati…