3 papers
astro-ph.CO2026
Prospective bounds on f(Q) gravity with pulsar timing arrays
Mohammadreza Davari, Alireza Allahyari
Pulsar timing arrays (PTAs) have recently provided compelling evidence for a stochastic gravitational wave background (SGWB) in the nanohertz frequency band, offering a unique wind…
astro-ph.CO2025
Lorentz Violation with Gravitational Waves: Constraints from NANOGrav and IPTA Data
Alireza Allahyari, Mohammadreza Davari, David F. Mota
We explore a theoretical framework in which Lorentz symmetry is explicitly broken by incorporating derivative terms of the extrinsic curvature into the gravitational action. These…
gr-qc2024
Testing No slip model with pulsar timing arrays: NANOGrav and IPTA
Mohammadreza Davari, Alireza Allahyari, Shahram Khosravi
We perform an observational study of modified gravity considering a potential inflationary interpretation of pulsar timing arrays (PTA). We use a motivated model known as no slip i…