Echoes of Compact Objects in Scalar-Tensor Theories of Gravity

no code implementations • 28 Jan 2021 • Christoforos Vlachos, Eleftherios Papantonopoulos, Kyriakos Destounis

Scalar-tensor theory predicts solutions to the gravitational field equations which describe compact objects in the presence of a non-minimally coupled scalar field to the Einstein tensor.

General Relativity and Quantum Cosmology High Energy Physics - Theory

Black holes of $(2+1)$-dimensional $f(R)$ gravity coupled to a scalar field

no code implementations • 16 Jan 2021 • Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang, Bin Wang

We consider $f(R)$ gravity theories in the presence of a scalar field minimally coupled to gravity with a self-interacting potential in $(2+1)$-dimensions.

General Relativity and Quantum Cosmology

Horizon curvature and spacetime structure influences on black hole scalarization

no code implementations • 22 Dec 2020 • Hong Guo, Xiao-Mei Kuang, Eleftherios Papantonopoulos, Bin Wang

Comparing with negative and zero cases, the scalar field near AdS black hole with positive curvature could be much easier to emerge.

General Relativity and Quantum Cosmology