Amit Samaddar

collaborators

8 papers

physics.gen-ph2025

Baryogenesis constraints and parameter bounds in $f (T, T_{G})$ modified gravity

Amit Samaddar, S. Surendra Singh

We investigate the generation of the observed baryon asymmetry of the Universe within the framework of $f (T, T_{G})$ gravity, where $T$ is the torsion scalar and $T_{G}$ denotes its…

gr-qc2025

Late-time cosmic dynamics in $f (R, L_{m})$ gravity with recent observations

Amit Samaddar, S. Surendra Singh

In this work, we investigate the late-time cosmic dynamics in the framework of non-linear $f (R, L_{m})$ gravity, adopting the functional form $f (R, L_{m}) = \frac{R}{2} + L_{m}^{2}$ . To explore…

astro-ph.CO2025

CPL-parametrized cosmic expansion in Galileon gravity: Constraints from recent data

Amit Samaddar, S. Surendra Singh

We explore the cosmic expansion history within the framework of Galileon gravity by employing a redshift-based expression for the Hubble rate, $H (z)$ , derived from the CPL parametr…

gr-qc2025

Constraining $f (Q, L_{m})$ gravity with redshift-dependent pressure: Insights from observational probes

Amit Samaddar, S. Surendra Singh

We explore the late time cosmological dynamics of the Universe within the framework of $f (Q, L_{m})$ gravity by considering the specific form $f(Q, \mathcal{L}_m)=-Q+2\mat…

gr-qc2025

Observational signatures of scalar field dynamics in modified $f (Q, L_{m})$ gravity

Amit Samaddar, S. Surendra Singh

We investigate the cosmological implications of a tanh-parametrized scalar field model in the framework of modified $f (Q, L_{m})$ gravity by adopting the form $f(Q, L_{m})=Î²Q+Î´L_…

gr-qc2025

Cosmological insights from an exponential $O m (z)$ function in $f (T, T_{G})$ gravity framework

Amit Samaddar, S. Surendra Singh

We examine a modified teleparallel gravity model defined by $f (T, T_{G}) = T + I^^{3} T_{G} + I^´ T$ by introducing an exponential $O m (z)$ diagnostic of the form $Om(z)=Î±e^{\frac{…

Baryogenesis constraints and parameter bounds in f(T,TG​) modified gravity

Late-time cosmic dynamics in f(R,Lm​) gravity with recent observations

CPL-parametrized cosmic expansion in Galileon gravity: Constraints from recent data

Constraining f(Q,Lm​) gravity with redshift-dependent pressure: Insights from observational probes

Observational signatures of scalar field dynamics in modified f(Q,Lm​) gravity

Cosmological insights from an exponential Om(z) function in f(T,TG​) gravity framework

Baryogenesis constraints and parameter bounds in $f (T, T_{G})$ modified gravity

Late-time cosmic dynamics in $f (R, L_{m})$ gravity with recent observations

Constraining $f (Q, L_{m})$ gravity with redshift-dependent pressure: Insights from observational probes

Observational signatures of scalar field dynamics in modified $f (Q, L_{m})$ gravity

Cosmological insights from an exponential $O m (z)$ function in $f (T, T_{G})$ gravity framework