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13 papers · 2 filters
Quasi-local energy from a Minkowski reference
Chiang-Mei Chen, Jian-Liang Liu, James M. Nester
The specification of energy for gravitating systems has been an unsettled issue since Einstein proposed his pseudotensor. It is now understood that energy-momentum is \emph{quasi-l…
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…
Regular Instantons in the Eddington-inspired-Born-Infeld Gravity: Lorentzian Wormholes from Bubble Nucleations
Mariam Bouhmadi-López, Che-Yu Chen, Pisin Chen +1
The O(4)-symmetric regular instanton solutions are studied within the framework of the Eddington-inspired-Born-Infeld gravity (EiBI). We find that the behavior of the solution woul…
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…
Time Asymmetry of Cosmic Background Evolution in Loop Quantum Cosmology
Wen-Hsuan Lucky Chang, Jiun-Huei Proty Wu
We discuss the asymmetry of cosmic background evolution in time with respect to the quantum bounce in the Loop Quantum Cosmology (LQC), employing the value of scalar field at the b…