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Causal structure of black holes in shift-symmetric Horndeski theories
Robert Benkel, Nicola Franchini, Mehdi Saravani +1
In theories with derivative (self-)interactions, the propagation of perturbations on nontrivial field configurations is determined by effective metrics. Generalized scalar-tensor t…
Black holes, gravitational waves and fundamental physics: a roadmap
Leor Barack, Vitor Cardoso, Samaya Nissanke +203
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-…
Dynamical obstruction to perpetual motion from Lorentz-violating black holes
Robert Benkel, Jishnu Bhattacharyya, Jorma Louko +2
Black holes in Lorentz-violating theories have been claimed to violate the second law of thermodynamics by perpetual motion energy extraction. We revisit this question for a Penros…