5 papers
Testing CDM with ANN-Reconstructed Expansion History from Cosmic Chronometers
Yuki Hashimoto, Kazuharu Bamba, Sanjay Mandal
In modern cosmology, the rapid growth of high-precision observational data, along with significant theoretical advances, has intensified the challenge of identifying a robust, mode…
Energy conditions of bouncing solutions in quadratic curvature gravity coupled with a scalar field
Yuki Hashimoto, Kazuharu Bamba, Sanjay Mandal
We examine the validity of classical energy conditions in nonsingular bouncing cosmological solutions arising in quadratic curvature gravity minimally coupled to a scalar field. Fo…
The Stability of Anisotropic Compact Stars Influenced by Dark Matter under Teleparallel Gravity: An Extended Gravitational Deformation Approach
Sneha Pradhan, Piyali Bhar, Sanjay Mandal +2
In our investigation, we pioneer the development of geometrically deformed strange stars within the framework of teleparallel gravity theory through gravitational decoupling via th…
Reconstruction of the scalar field potential in nonmetricity gravity through Gaussian processes
Gaurav N. Gadbail, Sanjay Mandal, P. K. Sahoo +1
The accelerated expansion of the universe has been widely confirmed, posing challenges to the standard CDM model, particularly the cosmological coincidence problem. This has mo…
Modeling and Analyzing Stability of Hybrid Stars within Gravity
Piyali Bhar, M. R. Shahzad, Sanjay Mandal +1
This study uses the Krori-Barua type metric to represent hybrid stars within the theory of gravity. We postulate that the hybrid star also contains strange quark matter in a…