6 papers
Consistency in the Quantum-Improved Charged Black Holes
Chiang-Mei Chen, Akihiro Ishibashi, Nobuyoshi Ohta
We investigate the consistency in the thermodynamics and the approaches at the equation and action levels for the quantum-improved charged black holes with scale-dependent coupling…
Bianchi-I Cosmology with Radiation in Asymptotically Safe Gravity
Chiang-Mei Chen, Ting-Kui Fan, Rituparna Mandal +1
We study the late-time evolution of an anisotropic Bianchi-I universe with radiation in the framework of asymptotically safe gravity. We first discuss the radiation-dominated unive…
Shadow of rotating black holes with consistent thermodynamics
Che-Yu Chen, Chiang-Mei Chen, Nobuyoshi Ohta
Quantum effects in general induce scale dependence in the coupling constants. We explore this possibility in gravity, with a scale-dependent Newton coupling. When applied to Kerr b…
Bianchi-I cosmology with scale dependent and in asymptotically safe gravity
Chiang-Mei Chen, Akihiro Ishibashi, Rituparna Mandal +1
We study anisotropic Bianchi-I cosmology, incorporating quantum gravitational corrections into the Einstein equation through the scale-dependent Newton coupling and cosmological te…
On the Cutoff Scale Identification of FLRW Cosmology in Asymptotically Safe Gravity
Chiang-Mei Chen, Rituparna Mandal, Nobuyoshi Ohta
We examine Friedmann-Lemaître-Robertson-Walker cosmology, incorporating quantum gravitational corrections through the functional renormalization group flow of the effective action…
Singularity resolution and regular black hole formation in gravitational collapse in asymptotically safe gravity
Tomohiro Harada, Chiang-Mei Chen, Rituparna Mandal
We adopt an effective action inspired by asymptotically safe gravity, in which the effective gravitational constant is parametrized as $G(ε) = G_{N} /[1 + \tildeÏ (G_{N}^{2} ε)^…