3 papers
astro-ph.CO2025
Composite Dissipation in Warm Inflation: Implications for the Primordial Power Spectrum
Ayush Sahu, Richa Arya, Sergio E. Jorás +1
Warm inflation is a well-motivated and generalized framework of inflation, describing a coupled inflaton-radiation bath. In this work, we investigate a warm inflation model with a…
gr-qc2023
Parametric Resonance in the Einstein frame: the Jordan-frame Doppelgänger
Karim H. Seleim, Richa Arya, Sergio E. Jorás
Modified theories of gravity have been investigated for quite a long time in the literature as a possible explanation for the inflationary period of the universe. The corres…
astro-ph.CO2020
Enhanced spectrum of primordial perturbations, galaxy formation and small scale structure
Karim H. Seleim, Amr A. El-Zant, A. M. Abdel-Moneim
The standard structure formation scenario is successful on linear scales. Several apparent problems affect it however at galactic scales, such as the small scale problems at low re…