Amit Samaddar

activity

20222025

most citedQualitative Stability Analysis of Cosmological Parameters in

f (T, B)

Gravity

24 citations · 26 across the 13 of their papers we have counts for

collaborators

14 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})=βQ+δL_{m…

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 $f (T, T_{G}) = T + γ T_{G} + δ T$ by introducing an exponential $O m (z)$ diagnostic of the form $Om(z)=αe^{\frac{z}{…

gr-qc2025

Reconstructing cosmic expansion in $f (R, G)$ gravity using a log-periodic deceleration model

Amit Samaddar, S. Surendra Singh

We study the late-time cosmology in $f (R, G) = R + α R^{2} + β e^{γ G}$ , using a logarithmic parametrization of the deceleration parameter $q (z) = q_{0} + q_{1} s in [l o g (1 + z)]$ . The Hubble parame…

gr-qc2024

Constraining model parameters in f(Q,C) gravity: Observational analysis and geometric diagnostics

Amit Samaddar, S. Surendra Singh

We investigate the cosmological implications of $f (Q, C)$ gravity with $f (Q, C) = α Q + β C$ , where $Q$ is the non-metricity scalar and $C$ encapsulates cosmological expansion terms. Three…

gr-qc2024

A novel approach to baryogenesis in $f (Q, L_{m})$ gravity and its cosmological implications

Amit Samaddar, S. Surendra Singh

We present an examination of the $f (Q, L_{m})$ gravity model, in which the functional form $f (Q, L_{m}) = α Q^{n} + β L_{m}$ is postulated and discuss its potential impact on cosmological…

gr-qc2024★ 2 cited

Barrow Holographic Dark Energy in $f (Q, L_{m})$ gravity: A dynamical system perspective

Amit Samaddar, S. Surendra Singh

In this work, we investigate the cosmological implications of the Barrow Holographic Dark Energy (BADE) model within the framework of $f (Q, L_{m})$ gravity, specifically considering…

gr-qc2024

Behaviours of rip cosmological models in $f (Q, C)$ gravity

Amit Samaddar, S. Surendra Singh, Shah Muhammad +1

In this study, the Universe's rip cosmology theories have been provided for the $f (Q, C)$ gravity theory, where $Q$ and $C$ stand for the non-metricity scalar and boundary term. We…

gr-qc2023

Stability Analysis of Cosmological models in $f (T, ϕ)$ Gravity

Amit Samaddar, S. Surendra Singh

We investigated the stability condition in $f (T, ϕ)$ gravity theory for considering two models by using dynamical system. We assume the forms of $G (T)$ are $(i)$ $G (T)$ = $αT+\fracβ…

gr-qc2023

Stability analysis of cosmological models coupled minimally with scalar field in $f (Q)$ gravity

Amit Samaddar, S. Surendra Singh, Shivangi Rathore

In this work, in the framework of dynamical system analysis, we focus on the study of the accelerated expansion of the Universe of $f (Q)$ gravity theory where $Q$ be the non-metric…

gr-qc2022★ 24 cited

Qualitative Stability Analysis of Cosmological Parameters in $f (T, B)$ Gravity

Amit Samaddar, S. Surendra Singh

We analyze the cosmological solutions of $f (T, B)$ gravity using dynamical system analysis where $T$ is the torsion scalar and $B$ be the boundary term scalar. In our work, we assum…

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

Reconstructing cosmic expansion in f(R,G) gravity using a log-periodic deceleration model

Constraining model parameters in f(Q,C) gravity: Observational analysis and geometric diagnostics

A novel approach to baryogenesis in f(Q,Lm​) gravity and its cosmological implications

Barrow Holographic Dark Energy in f(Q,Lm​) gravity: A dynamical system perspective

Behaviours of rip cosmological models in f(Q,C) gravity

Stability Analysis of Cosmological models in f(T,ϕ) Gravity

Stability analysis of cosmological models coupled minimally with scalar field in f(Q) gravity

Qualitative Stability Analysis of Cosmological Parameters in f(T,B) Gravity

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

Reconstructing cosmic expansion in $f (R, G)$ gravity using a log-periodic deceleration model

A novel approach to baryogenesis in $f (Q, L_{m})$ gravity and its cosmological implications

Barrow Holographic Dark Energy in $f (Q, L_{m})$ gravity: A dynamical system perspective

Behaviours of rip cosmological models in $f (Q, C)$ gravity

Stability Analysis of Cosmological models in $f (T, ϕ)$ Gravity

Stability analysis of cosmological models coupled minimally with scalar field in $f (Q)$ gravity

Qualitative Stability Analysis of Cosmological Parameters in $f (T, B)$ Gravity