Massive scalar field perturbation on Kerr black holes in dynamical Chern–Simons gravity

Abstract

We study massive scalar field perturbation on Kerr black holes in dynamical Chern–Simons gravity by performing a $$(2+1)$$ ( 2 + 1 ) -dimensional simulation. Object pictures of the wave dynamics in time domain are obtained. The tachyonic instability is found to always occur for any nonzero black hole spin and any scalar field mass as long as the coupling constant exceeds a critical value. The presence of the mass term suppresses or even quench the instability. The quantitative dependence of the onset of the tachyonic instability on the coupling constant, the scalar field mass and the black hole spin is given numerically.

Beyond the spontaneous scalarization: New fully nonlinear dynamical mechanism for formation of scalarized black holes

“…The nonlinear dynamics of scalarized black holes in sGB gravity, including mergers and stellar core-collapse, was examined in [22][23][24][25][26]. Spontaneous scalarization was also considered in other alternative theories of gravity [27][28][29][30][31][32].…”

Time evolutions of scalar field perturbation in Schwarzschild de-Sitter black hole from Einstein-scalar–Gauss–Bonnet theory

“…Since it is not possible to find the analytical solution to these time-dependent wave equations, we have to solve it numerically. One simple efficient method is the discretization method applied in [58][59][60]. Then, by defining R(r…”

Bianchi type-V Dark Energy Modified f(R,T) Gravity Model in the Presence of Massive Scalar Field in Lyra Geometry

“…From Eqs. ( 24), ( 31) -( 33), we obtained the dynamical parameters, which shows the physical nature of the model are as (34) where 𝜑 0 , 𝜑 1 are constant of integration. using Eq.…”

“…Subsequent behavior of the models is explored by many researchers, among them Singh and Rani [23], Mohanty and Pradhan [24], Naidu et al [25], they examined a spatially homogenous and anisotropic cosmological models of the universe based on Lyra Geometry and General Relativity in presence of an attractive massive scalar field in different physical context, in which special law of variation for Hubble's parameter [Proposed by Berman (1983)] was applied to examined the constant deceleration parameter. In present decades, we have also obtained several authors who have examined in different cosmological models of the type with different physical features in the frame work of an attractive massive scalar field based in different context so far [26][27][28][29][30][31][32][33][34][35][36].…”