Probing symmetric teleparallel gravity in the early universe
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2022
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912098650423296 |
|---|---|
| author | De, Avik Saha, Dalia Subramaniam, Ganesh Sanyal, Abhik Kumar |
| author_facet | De, Avik Saha, Dalia Subramaniam, Ganesh Sanyal, Abhik Kumar |
| contents | General theory of relativity can be equivalently formulated on a flat space-time associating a torsion-free affine connection of non-vanishing non-metricity scalar $Q$. In this paper, we present an extension of this, viz., the $f(Q)$ theory of gravity, and explore the early evolution of the universe in the background of anisotropic Bianchi-I model. The $f(Q)$ theory in the current setting through its geometric modification is quite successful in explaining the late time accelerated expansion. Here we note that it accommodates latest released constraints on the inflationary parameters by Planck's collaboration group with excellent precession, but fails to produce a viable decelerated expansion in the radiation dominated era. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2209_12120 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Probing symmetric teleparallel gravity in the early universe De, Avik Saha, Dalia Subramaniam, Ganesh Sanyal, Abhik Kumar General Relativity and Quantum Cosmology General theory of relativity can be equivalently formulated on a flat space-time associating a torsion-free affine connection of non-vanishing non-metricity scalar $Q$. In this paper, we present an extension of this, viz., the $f(Q)$ theory of gravity, and explore the early evolution of the universe in the background of anisotropic Bianchi-I model. The $f(Q)$ theory in the current setting through its geometric modification is quite successful in explaining the late time accelerated expansion. Here we note that it accommodates latest released constraints on the inflationary parameters by Planck's collaboration group with excellent precession, but fails to produce a viable decelerated expansion in the radiation dominated era. |
| title | Probing symmetric teleparallel gravity in the early universe |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2209.12120 |