5 papers
Thurston geometries and parameter constraints from SNIa data
Tanay Gupta, Anshul Verma, Sukanta Panda +1
Following the numerous evidence for large-scale cosmic isotropy violation with the advent of the `precision cosmology' era, we explore the possible advantages of extending the flat…
Cosmology-informed Neural Networks to infer dark energy equation-of-state
Anshul Verma, Shashwat Sourav, Pavan K. Aluri +1
We present a framework that combines physics-informed neural networks (PINNs) with Markov Chain Monte Carlo (MCMC) inference to constrain dynamical dark energy models using the Pan…
Cosmographic constraints on a Gödel-type rotating universe
Anshul Verma, Pavan K. Aluri, David F. Mota +1
We investigate the possibility of global cosmic rotation using a Gödel-type rotating cosmological model, constrained through a cosmographic analysis of Type Ia supernovae (SNIa) f…
Anisotropic universe with anisotropic dark energy
Anshul Verma, Pavan K. Aluri, David F. Mota
We investigate the anisotropic parameterization of the dark energy equation of state within the framework of an axisymmetric (planar) Bianchi-I universe. Using the latest Pantheon+…
Constraints on Bianchi-I type universe with SH0ES anchored Pantheon+ SNIa data
Anshul Verma, Sanjeet K. Patel, Pavan K. Aluri +2
We study the Bianchi-I cosmological model motivated by signals of statistical isotropy violation seen in cosmic microwave background (CMB) observations and others. To that end, we…