From the 1 of 13 linked papers with an AI index.
13 papers
Effective reheating in Gauss--Bonnet inflation with coupling
Ali Seidabadi, Sara Saghafi, Kourosh Nozari
We study effective reheating in a scalar--Gauss--Bonnet inflationary model with a phase-space-dependent coupling , in which a compact field-space feature is combined with a…
Probing Quantum Gravity through Chaotic Orbits and Strong-Field Effects in Kerr Black Holes Embedded in Perfect Fluid Dark Matter
Shubham Kala, Sara Saghafi, M. Yousaf +4
The paper investigates how quantum‑gravity corrections and perfect fluid dark matter affect photon trajectories around a rotating (Kerr) black hole, using chaos diagnostics such as…
Higher Dimensional Loop Quantum Black hole in de Sitter Spacetime: Quasinormal Modes and Shadow Signatures
Kourosh Nozari, Sara Saghafi, Ali Mohammadpour
We investigate the dynamical and optical properties of a higher-dimensional loop-quantum-corrected black hole in a de Sitter background. The quasinormal modes of massless scalar pe…
Thin Accretion Disks around Rotating Charged Black Holes in an Effective Higher-Curvature Spacetime
Mohammad Hassani, Kourosh Nozari, Sara Saghafi
We investigate the structure and emission properties of a thin accretion disk around a rotating charged black hole described by an effective higher-curvature-inspired spacetime, co…
Rotating Black Holes with Primary Scalar Hair: Shadow Signatures in Beyond Horndeski Gravity
Kourosh Nozari, Milad Hajebrahimi, Sara Saghafi +2
The Event Horizon Telescope (EHT) image of M87* provides a direct test of strong-field gravity, measuring an angular shadow diameter and a circularit…
Beyond : Gauss--Bonnet inflation with
Ali Seidabadi, Sara Saghafi, Kourosh Nozari
Gauss--Bonnet inflation typically affects the dynamics over an extended portion of the trajectory, making it difficult to isolate a controlled imprint at CMB scales. We consider a…