Matter Bounce Scenario and the Dynamical aspects in f(Q,T) Gravity

Abstract

In the context of the late time cosmic acceleration phenomenon, many geometrically modified theories of gravity have been proposed in recent times. In this paper, we have investigated the role of a recently proposed extension of symmetric teleparallel gravity dubbed as f(Q,T) gravity in getting viable cosmological models, where Q and T respectively denote the non-metricity and the trace of energy momentum tensor. We stress upon the mathematical simplification of the formalism in the f(Q,T) gravity and derived the dynamical parameters in more general form in terms of the Hubble parameter. We considered two different cosmological models mimicking non-singular matter bounce scenario. Since energy conditions play a vital role in providing bouncing scenario, we have analyzed different possible energy conditions to show that strong energy condition and null energy condition be violated in this theory. The models considered in the work are validated through certain cosmographic tests and stability analysis.

17 pages, 36 figures

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• Rip cosmological models in extended symmetric teleparallel gravity
• Exploring accelerated expansion in the universe: A study of $f(Q,T)$ gravity with parameterized EoS and cosmological constraints
• Physical Analysis of Spherical Stellar Structures in $f(\mathrm{Q},\mathrm{T})$ Theory
• Bouncing cosmology in modified gravity with higher-order Gauss-Bonnet curvature term
• The dynamics of matter bounce cosmology in Weyl-type $f(Q,T)$ gravity
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• Casimir wormhole with GUP correction in extended symmetric teleparallel gravity
• Role of Extended Gravity Theory in Matter Bounce Dynamics
• Study of Viable Compact Stellar Structures in Non-Riemannian Geometry
• Observational Constraints on Hybrid Scale Factor in f(Q,T) Gravity with Anisotropic Space-Time
• Tensor Perturbations from Bounce Inflation Scenario in f(Q) Gravity
• Observationally constrained accelerating cosmological model with higher power of non-metricity and squared trace
• Bouncing cosmological models in a functional form of F(R) gravity
• Perturbation Spectra of Warm Inflation in $f(Q,T)$ Gravity
• Constraining Exponential f(Q) Gravity with Cosmic Chronometers and Supernovae: A Data-Driven Analysis
• Effects of the matter Lagrangian degeneracy in $f(Q,T)$ gravity
• Impact of Non-metricity and Matter Source on the Geometry of Anisotropic Spheres
• Exploring the viability of charged Spheres admitting non-metricity and matter source
• Charged black hole solutions in $f(R,T)$ gravity coupled to nonlinear electrodynamics
• Evolution of Generalized Brans-Dicke parameter within a Superbounce scenario
• Viable Wormhole Structures and Energy Conditions in f(Q,T) Theory
• Non-singular bouncing cosmology in $f(T,\mathcal{T})$ gravity with energy condition violations
• Non-Singular Bouncing cosmology from Phantom Scalar-Gauss-Bonnet Coupling: Reconstruction with Observational Insights
• Dynamical systems analysis of a cosmological model with interacting Umami Chaplygin fluid in adiabatic particle creation mechanism: Some bouncing features
• Mimetic-$f(Q)$ gravity: cosmic reconstruction and energy conditions
• Bouncing cosmological model with general relativistic hydrodynamics in extended gravity
• Exponential correction to Friedmann equations
• Vulnerability of f(Q) gravity theory and a possible resolution
• Exploring the Viability of $f(Q,T)$ Gravity: Constraining Parameters with Cosmological Observations
• Bouncing Cosmologies in modified gravity with space time torsion
• Scale-Invariant Bounce Cosmology in Weyl f(Q) Gravity with Quintom Signature
• Metric-Affine Myrzakulov Gravity Theories