5 papers
Thermodynamic and tachyonic instability for asymptotically flat black holes
Yun Soo Myung, De-Cheng Zou, Meng-Yun Lai
It was confirmed that the negative modes of the Euclidean section for asymptotically flat black holes reveal the thermodynamic instability of these black holes in the grand canonic…
Rotating scalarized black holes in scalar couplings to two topological terms
De-Cheng Zou, Yun Soo Myung
The tachyonic instability of the Kerr black holes is analyzed in the Einstein-scalar theory with the quadratic scalar couplings to two topological terms which are parity-even Gauss…
Black holes in new massive conformal gravity
Yun Soo Myung, De-Cheng Zou
We investigate the black holes in the new massive conformal gravity which is not invariant under conformal transformations because of the presence of the Einstein-Hilbert term. Fir…
Stability of scalarized charged black holes in the Einstein-Maxwell-Scalar theory
Yun Soo Myung, De-Cheng Zou
We analyze the stability of scalarized charged black holes in the Einstein-Maxwell-Scalar (EMS) theory with quadratic coupling. These black holes are labelled by the number of $n=0…
Black-hole stability in non-local gravity
Gianluca Calcagni, Leonardo Modesto, Yun Soo Myung
We prove that Ricci-flat vacuum exact solutions are stable under linear perturbations in a new class of weakly non-local gravitational theories finite at the quantum level.