36 citations · 200 across the 11 of their papers we have counts for
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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…