Constant sound speed and its thermodynamical interpretation in f(Q) gravity
نویسندگان
چکیده
On the basis of homogeneous and isotropic Friedmann-Lemaitre-Robertson-Walker (FLRW) geometry, solutions to issues cosmic acceleration dark energy are being put forth within context $f\left( Q\right)$ gravity. We take into account a power law $f(Q)$ model using Q\right) =\alpha Q^{n}$, where $\alpha $ $n$ free parameters. In current scenario, we may establish density pressure for our by applying constant sound speed parameterizations, i.e., $\vartheta_{s}^{2}=\beta$, barotropic fluid is described in terms $\beta$. The field equations then derived, their precise established. obtain constraints on parameters updated Hubble (Hz) data sets consisting 31 points, recently published Pantheon samples (SNe) with 1048 Baryon acoustic oscillations (BAO) sets. also examine physical behaviour deceleration parameter, equation state (EoS) statefinder diagnostic, Om diagnostic. conclude that $\ predicts transition universe from acceleration. Further, investigate feasibility model, discussed some its thermodynamic aspects.
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2023
ISSN: ['1873-1562', '0550-3213']
DOI: https://doi.org/10.1016/j.nuclphysb.2023.116158