Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2411.04757 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916634685341696 |
|---|---|
| author | Sahlu, Shambel Shukla, Bhupendra Kumar Tiwari, Rishi Kumar Sofuoğlu, Değer Alfedeel, Alnadhief H. A. |
| author_facet | Sahlu, Shambel Shukla, Bhupendra Kumar Tiwari, Rishi Kumar Sofuoğlu, Değer Alfedeel, Alnadhief H. A. |
| contents | In this paper, we have studied the late-time accelerating expansion of the Universe using the matter-geometry coupled $ f(Q, T) $ gravity model, where $ Q $ is the non-metricity scalar and $ T $ represents the trace of the energy-momentum tensor. We constrain the best-fit values of cosmological parameters $Ω_{m0}, H_0, α_0~\mbox{and}~ β_0$ through the Monte Carlo Markov Chain (MCMC) simulation {using 31 Hubble parameter data points from cosmic chronometers (CC) and 26 data points from baryon acoustic oscillations (BAO), making a total of 57 datasets (labeled \texttt{CC+BAO}), as well as SNIa distance moduli measurements from the Pantheon+ sample, which consists of 1701 light curves of 1550 distinct supernovae (labeled \texttt{Pantheon +SHOES}), and their combination (labeled \texttt{CC+BAO+Pantheon +SHOES)}}. {We compare our constrained Hubble constant $H_0$ value with different late-time and early-time cosmological measurements.} Deceleration {parameter} \(q(z)\), effective equation of state parameters \(w_{eff}(z)\), Hubble parameter $H(z)$, and distance modulus \(μ(z)\) are numerical results of dynamical quantities that show that the $f(Q, T)$ gravity model is compatible with a transition towards a quintessence-like phase in the late-time. In conformity with \(Λ\)CDM, we moreover take into account the geometrical interpretations by considering the state-finder parameters \(r-s\) and \(r-q\), which are crucial parameters for additional analysis. Additionally, the statistical analysis has been carried out for further investigation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_04757 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quintessence phase of the late-time Universe in $f(Q,T)$ gravity Sahlu, Shambel Shukla, Bhupendra Kumar Tiwari, Rishi Kumar Sofuoğlu, Değer Alfedeel, Alnadhief H. A. General Relativity and Quantum Cosmology In this paper, we have studied the late-time accelerating expansion of the Universe using the matter-geometry coupled $ f(Q, T) $ gravity model, where $ Q $ is the non-metricity scalar and $ T $ represents the trace of the energy-momentum tensor. We constrain the best-fit values of cosmological parameters $Ω_{m0}, H_0, α_0~\mbox{and}~ β_0$ through the Monte Carlo Markov Chain (MCMC) simulation {using 31 Hubble parameter data points from cosmic chronometers (CC) and 26 data points from baryon acoustic oscillations (BAO), making a total of 57 datasets (labeled \texttt{CC+BAO}), as well as SNIa distance moduli measurements from the Pantheon+ sample, which consists of 1701 light curves of 1550 distinct supernovae (labeled \texttt{Pantheon +SHOES}), and their combination (labeled \texttt{CC+BAO+Pantheon +SHOES)}}. {We compare our constrained Hubble constant $H_0$ value with different late-time and early-time cosmological measurements.} Deceleration {parameter} \(q(z)\), effective equation of state parameters \(w_{eff}(z)\), Hubble parameter $H(z)$, and distance modulus \(μ(z)\) are numerical results of dynamical quantities that show that the $f(Q, T)$ gravity model is compatible with a transition towards a quintessence-like phase in the late-time. In conformity with \(Λ\)CDM, we moreover take into account the geometrical interpretations by considering the state-finder parameters \(r-s\) and \(r-q\), which are crucial parameters for additional analysis. Additionally, the statistical analysis has been carried out for further investigation. |
| title | Quintessence phase of the late-time Universe in $f(Q,T)$ gravity |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2411.04757 |