6 papers · 1 filter
Celestial Holography, A Hitchhiker's Guide to the Celestial Sphere
Faïçal Barzi
This primer offers an first introduction to Celestial Holography, a rapidly evolving framework aiming to describe quantum gravity in asymptotically flat spacetimes. We start from t…
Modified Unruh Thermodynamics in Emergent Gravity: Finite Heat Capacity and Rényi Entropy
F. Barzi, H. El Moumni, K. Masmar
We show that Jacobson's thermodynamic derivation of Einstein's equations remains valid when local Rindler horizons are treated as finite heat-capacity systems, resolving the unphys…
On Rényi Microstructural Aspects of Asymptotically Flat Charged Black Holes: A Novel Duality
F. Barzi, H. El Moumni, K. Masmar
We explore the microstructure of asymptotically flat charged black holes through the lens of nonextensive Rényi statistics. A modified form of the Rényi entropy is proposed to in…
Nonextensive Black Hole Thermodynamics from Generalized Euclidean Path Integral and Wick's Rotation
F. Barzi, H. El Moumni, K. Masmar
This paper extends the Euclidean path integral formalism to account for nonextensive statistical mechanics. Concretely, we introduce a generalized Wick's rotation from real time $t…
Riemann Surfaces and Winding Numbers of Rényi Phase Structure of Charged-Flat Black Holes
F. Barzi, H. El Moumni, K. Masmar
It's widely recognized that the free energy landscape captures the essentials of thermodynamic phase transitions. In this work, we extend the findings of [1] by incorporating the n…
Thermal chaos of charged-flat black hole via Rényi formalism
F. Barzi, H. El Moumni, K. Masmar
Charged-flat black holes in the Rényi extended phase space demonstrate phase structures akin to those of a van der Waals fluid in four-dimensional spacetime and mirror the behavio…