176 citations · 3.9k across the 153 of their papers we have counts for
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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…
Magnetic-induced Spontaneous Scalarization in Dynamcial Chern-Simons Gravity
Shao-Jun Zhang, Bin Wang, Eleftherios Papantonopoulos +1
In the framework of the dynamical Chern-Simons gravity, we study the scalar field perturbations of the Reissner-Nordström-Melvin spacetime, which describes a charged black hole per…
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…
Axion induced angular momentum reversal in Kerr-like black holes
Nikos Chatzifotis, Panos Dorlis, Nick E. Mavromatos +1
We consider a pseudoscalar axion-like field coupled to a Chern-Simons gravitational anomaly term. The axion field backreacts on a rotating Kerr black hole background, resulting in…
Quasinormal modes of massive scalar fields in four-dimensional wormholes: anomalous decay rate
P. A. González, Eleftherios Papantonopoulos, Ángel Rincón +1
In this work we consider a Generalized Bronnikov-Ellis wormhole and the tideless Morris-Thorne wormhole and we study the propagation of massive scalar fields. We calculate the quas…
Quasinormal modes for massive charged scalar fields in Reissner-Nordström dS black holes: anomalous decay rate
P. A. González, Eleftherios Papantonopoulos, Joel Saavedra +1
The anomalous decay rate of the quasinormal modes occurs when the longest-lived modes are the ones with higher angular number. Such behaviour has been recently studied in different…