3 papers · 1 filter
Nonconformally Ricci-flat instantons in Conformal Gravity with and without nonlinear matter fields
Cristóbal Corral, Borja Diez, Eleftherios Papantonopoulos
In this work, we study nonconformally Ricci-flat gravitational instantons in four-dimensional Conformal Gravity, both in vacuum and in the presence of nonlinear conformal matter. F…
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…
Exact black holes in string-inspired Euler-Heisenberg theory
Athanasios Bakopoulos, Thanasis Karakasis, Nick E. Mavromatos +2
We consider higher-order derivative gauge field corrections that arise in the fundamental context of dimensional reduction of String Theory and Lovelock-inspired gravities and obta…