4.5k citations · 11.9k across the 195 of their papers we have counts for
201 papers
Einstein gravity as the thermal equilibrium state of a nonminimally coupled scalar field geometry
Numa Karolinski, Valerio Faraoni
We test ideas of the recently proposed first-order thermodynamics of scalar-tensor gravity using an exact geometry sourced by a conformally coupled scalar field. We report a non-mo…
Realisations of type III stress-energy tensors of the Hawking-Ellis classification in scalar-tensor gravity
Narayan Banerjee, Valerio Faraoni, Robert Vanderwee +1
The ``ugly duckling'' of the Segré-Plebański-Hawking-Ellis classification of stress-energy tensors is believed to be either impossible or extremely difficult to realise in Einstein…
Generalized black hole entropy in two dimensions
Shin'ichi Nojiri, Sergei D. Odintsov, Valerio Faraoni
The Bekenstein-Hawking entropy of a black hole is proportional to its horizon area, hence in spacetime dimensions it is constant because the horizon degenerates into two poin…
Thermal stability of stealth and de Sitter spacetimes in scalar-tensor gravity
Serena Giardino, Andrea Giusti, Valerio Faraoni
Stealth solutions of scalar-tensor gravity and less-known de Sitter spaces that generalize them are analyzed regarding their possible role as thermal equilibria at non-zero tempera…
Observational evidence for cosmological coupling of black holes and its implications for an astrophysical source of dark energy
Duncan Farrah, Kevin S. Croker, Gregory Tarlé +16
Observations have found black holes spanning ten orders of magnitude in mass across most of cosmic history. The Kerr black hole solution is however provisional as its behavior at i…
Cosmological analogies for geophysical flows, Lagrangians, and new analogue gravity systems
Valerio Faraoni, Sonia Jose
Formal analogies between the ordinary differential equations describing geophysical flows and Friedmann cosmology are developed. As a result, one obtains Lagrangian and Hamiltonian…