Modified $f(R,T)$ theory in light of gravitational wave standard sirens
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915266163638272 |
|---|---|
| author | Asghari, Mahnaz Sheykhi, Ahmad |
| author_facet | Asghari, Mahnaz Sheykhi, Ahmad |
| contents | In this paper, we ponder observational constraints
on the modified $f(R,T)$ gravity, where the gravitational action is
a function of Ricci scalar $R$ plus the trace of the energy-momentum
tensor $T$, regarding the functional form
$f(R,T)=R+2f(T)$ with $f(T)=8πGλT$.
For this purpose, we utilize recently available data,
including cosmic microwave background, weak lensing, supernovae,
baryon acoustic oscillations, and redshift-space distortions
measurements, together with forcasted gravitational wave
(GW) data from Laser Interferometer Space Antenna (LISA).
Notably, we examine the potentiality of simulated GW data
from LISA standard sirens (SS) sources to enhance
cosmological constraints on the $f(R,T)$ model parameters.
In this regard, we create three LISA mock catalogs,
namely Pop III, Delay, and No Delay, to improve the
obtained constraints on cosmological parameters of $f(R,T)$
gravity from current observations. Numerical analysis
reveals that mock GW data from LISA SS sources
make marginal improvements on constraining the $f(R,T)$
model cosmological parameters. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_12674 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Modified $f(R,T)$ theory in light of gravitational wave standard sirens Asghari, Mahnaz Sheykhi, Ahmad General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory In this paper, we ponder observational constraints on the modified $f(R,T)$ gravity, where the gravitational action is a function of Ricci scalar $R$ plus the trace of the energy-momentum tensor $T$, regarding the functional form $f(R,T)=R+2f(T)$ with $f(T)=8πGλT$. For this purpose, we utilize recently available data, including cosmic microwave background, weak lensing, supernovae, baryon acoustic oscillations, and redshift-space distortions measurements, together with forcasted gravitational wave (GW) data from Laser Interferometer Space Antenna (LISA). Notably, we examine the potentiality of simulated GW data from LISA standard sirens (SS) sources to enhance cosmological constraints on the $f(R,T)$ model parameters. In this regard, we create three LISA mock catalogs, namely Pop III, Delay, and No Delay, to improve the obtained constraints on cosmological parameters of $f(R,T)$ gravity from current observations. Numerical analysis reveals that mock GW data from LISA SS sources make marginal improvements on constraining the $f(R,T)$ model cosmological parameters. |
| title | Modified $f(R,T)$ theory in light of gravitational wave standard sirens |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2410.12674 |