5 papers
Quadratic energy-momentum squared gravity: constraints from big bang nucleosynthesis
Ozgur Akarsu, Mariam Bouhmadi-López, Nihan Katirci +1
In this work, we extend the standard cosmological model within the quadratic energy-momentum squared gravity (qEMSG) framework, introducing a nonminimal interaction between the usu…
Dark Energy with Constant Inertial Mass Density: Updated Constraints and Curvature-Induced Sign Transitions in and
Luis A. Escamilla, Berat Karadavut, Nihan Katırcı
We present updated observational constraints on the simple-gDE model, characterized by a constant inertial mass density (IMD) ,which belongs to the broader…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Role of internal space correlations in the dynamics of a higher-dimensional Bianchi type-I universe: shear scalar and Hubble parameter perspectives
Nihan Katırcı
We investigate exact solutions of the Einstein field equations in higher-dimensional, spatially homogeneous Bianchi type-I spacetimes, introducing a real parameter that correl…
Dynamical analysis of logarithmic energy-momentum squared gravity
Giovanni Acquaviva, Nihan Katirci
We perform the dynamical system analysis of a cosmological model in the energy-momentum squared gravity (EMSG) of the form , which…