Javad Tabatabaei

Department of Physics, Sharif University of Technology

Local Limit of Nonlocal Gravity: ‌ A cosmological Investigation

Abstract: In this talk, we explore accepts of the newly developed extension of teleparallel equivalence of GR, which coincides with the local limit of the “Nonlocal Gravity” theory developed by Nonlocal Gravity theory developed by Mashhoon (see Nonlocal Gravity by Bahram Mashhoon, Oxford University Press, 2017). This formulation of gravity has been developed in close accordance with electrodynamics of mediums; both in local and nonlocal versions. This newly added ‘medium’-like effect of gravity can affect cosmology in many ways; we review these effects by studying back-ground level cosmology, linear perturbations in cosmology, gravitational wave propagation, anisotropic models of cosmology and even black-holes geometries. Our theoretical/numerical investigation reveals many interesting features of this theory, such as the denial of static dark-energy and cosmological constant. We also achieve some alleviation of the H_0 tension problem through our model.

یکشنبه 7 آبان 1402، ساعت 17:15

Sunday 29 October 2023 – 17:15 Tehran Time

Hybrid Seminar

دانشکده فیزیک – طبقه اول – کلاس فیزیک 3 Physics Department – first floor – Room Physics 3   /

https://vc.sharif.edu/ch/cosmology

گزینه ورود به صورت مهمان – Enter as a Guest