825 citations · 4.4k across the 170 of their papers we have counts for
6 papers · 1 filter
Inflationary spectral tilts as a result of the dilatation symmetry breaking
Pisin Chen, Jiro Matsumoto, Rio Saitou
We derive the spectral indices and their runnings of single inflation models by a new approach. We perform a dilatation transformation to the linear cosmological perturbations and…
Quantum cosmology of Eddington-Born-Infeld gravity fed by a scalar field: the big rip case
Imanol Albarran, Mariam Bouhmadi-López, Che-Yu Chen +1
We study the quantum avoidance of the big rip singularity in the Eddington-inspired-Born-Infeld (EiBI) phantom model. Instead of considering a simple phantom dark energy component,…
Probing Palatini-type gravity theories through gravitational wave detections via quasinormal modes
Che-Yu Chen, Mariam Bouhmadi-López, Pisin Chen
The possibility of testing gravity theories with the help of gravitational wave detections has become an interesting arena of recent research. In this paper, we follow this directi…
On the Consistency of the Wheeler-DeWitt Equation in the Quantized Eddington-inspired Born-Infeld Gravity
Mariam Bouhmadi-López, Che-Yu Chen, Pisin Chen
We re-examine the quantum geometrodynamical approach within the Eddington-inspired-Born-Infeld theory of gravity, which was first proposed in our previous work [1]. A thorough anal…
Quasi-normal modes of massless scalar fields for charged black holes in the Palatini-type gravity
Che-Yu Chen, Pisin Chen
The scrutiny of black hole perturbations and its application to testing gravity theories have been a very crucial frontier in modern physics. In this paper we study the quasi-norma…
Hawking radiation as instantons
Pisin Chen, Misao Sasaki, Dong-han Yeom
There have been various interpretations of Hawking radiation proposed based on the perturbative approach, and all have confirmed Hawking's original finding. One major conceptual ch…