7 papers
Higher Lovelock Curvature Terms Favor Local Nakedness in Dust Collapse
Apratim Ganguly, Radouane Gannouji, Akshay Kumar
We show that higher-curvature Lovelock terms do not restore local cosmic censorship in spherical dust collapse, but instead promote the local visibility of central shell-focusing s…
Neutron stars in Poincaré gauge gravity with quadratic torsion
Chaitanya Vashistha, Radouane Gannouji, Apratim Ganguly
We study static neutron stars in an algebraic sector of Poincaré gauge gravity with parity-even and parity-odd quadratic torsion invariants. Since torsion is non-propagating, the…
Entanglement inequalities, black holes and the architecture of typical states
Radouane Gannouji, Ayan Mukhopadhyay, Nicolas Pinochet
Using holographic realizations of the Araki-Lieb (AL) inequality, we show that typical pure states in large holographic CFTs possess two characteristic length scales determined…
Oppenheimer-Snyder Collapse in f(R) Gravity : Stalemate or Resolution?
Soumya Chakrabarti, Apratim Ganguly, Radouane Gannouji +1
We study the Oppenheimer--Snyder (OS) collapse problem in metric gravity by matching a homogeneous dust Friedmann--Lemaître--Robertson--Walker (FLRW) interior to a generali…
Linear stability of charged warm holes
Radouane Gannouji, Alejandro Guzmán Antonucci
Charged black holes are known to suffer from an interior instability associated with the presence of the Cauchy horizon. Recently, a hairy charged black hole was proposed that avoi…
Nonlinear dynamics in Horndeski gravity: a renormalized approach to effective gravitational coupling
Luca Amendola, Carla Bernal, Radouane Gannouji
This paper develops a renormalized perturbation theory framework for nonlinear structure formation in a broad class of modified gravity models that exhibit Vainshtein screening, wi…