36 citations · 200 across the 11 of their papers we have counts for
11 papers
To stealth or not to stealth: Thermodynamics of stealth black holes
Athanasios Bakopoulos, Thanasis Karakasis, Eleftherios Papantonopoulos
Using Euclidean methods we investigate the thermodynamics of stealth black hole solutions, which are solutions that geometrically are indistinguishable from those of general relati…
Regular Compact Objects with Scalar Hair
Thanasis Karakasis, Nick E. Mavromatos, Eleftherios Papantonopoulos
We discuss exact regular compact object solutions in higher dimensional extensions of General Relativity sourced by a phantom scalar field in arbitrary spacetime dimensions ($D…
Black Holes with Scalar Hair in Three Dimensions
Thanasis Karakasis, George Koutsoumbas, Eleftherios Papantonopoulos
Three - dimensional static and spinning black hole solutions of the Einstein-Klein-Gordon system are obtained for a particular scalar field configuration. At large distances, and f…
Motion of particles in a magnetically charged Euler-Heisenberg black hole with scalar hair
Thanasis Karakasis, George Koutsoumbas, Eleftherios Papantonopoulos
We study the geodesic motion of uncharged particles in the background of a magnetically charged Euler-Heisenberg black hole with a scalar hair. The spacetime can be asymptotically…
Rotating -dimensional Black Holes in Einstein-Maxwell-Dilaton Theory
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We consider Einstein-Maxwell-Dilaton theory in -dimensions where the coupling between the scalar field and the Maxwell invariant is the dilatonic coupling $f(ϕ) = \exp (-2αϕ…
Magnetically Charged Euler-Heisenberg Black Holes with Scalar Hair
Thanasis Karakasis, George Koutsoumbas, Andri Machattou +1
We study the Einstein-Euler-Heisenberg theory in the presence of a self interacting scalar field, minimally coupled to gravity. We solve analytically the field equations for the ma…
-Dimensional Black Holes in Gravity
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We consider a gravity theory in -dimensions with a self-interacting scalar field non-minimally coupled to gravity. Without specifying the form of the function,…
Gravity Wormholes sourced by a Phantom Scalar Field
Thanasis Karakasis, Eleftherios Papantonopoulos, Christoforos Vlachos
We derive an exact wormhole spacetime supported by a phantom scalar field in the context of gravity. Without specifying the form of the function, the scal…
Exact Black Hole Solutions with a Conformally Coupled Scalar Field and Dynamic Ricci Curvature in Gravity Theories
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We report exact black hole solutions in asymptotically flat or (A)dS four-dimensional spacetime with a conformally coupled self-interacting scalar field in gravity. We first…
Black holes of -dimensional gravity coupled to a scalar field
Thanasis Karakasis, Eleftherios Papantonopoulos, Zi-Yu Tang +1
We consider gravity theories in the presence of a scalar field minimally coupled to gravity with a self-interacting potential in -dimensions. Without specifying the f…
Curvature Scalarization of Black Holes in f(R) Gravity
Zi-Yu Tang, Bin Wang, Thanasis Karakasis +1
We consider f(R) gravity theories in the presence of a scalar field minimally coupled to gravity with a self-interacting potential. When the scalar field backreacts to the metric w…