5 papers
Relativistic Signatures of Dark Matter Equations of State in Static Spherically Symmetric Spacetimes
Akash Yadav, Sudhava Yadav, K. K. Venkataratnam
We study how three physically motivated dark matter equations of state alter the spacetime geometry of static, spherically symmetric black holes in General Relativity. The models c…
Role of Domain Walls in the Early Universe in the Context of Mode Matching
K. K. Venkataratnam
We study the role of domain walls and their relics in the very early Universe within the framework of the mode-matching technique. Domain walls formed during the spontaneous breaki…
Black Hole Evaporation Driven by Non-Thermal Squeezing Through SNS and CSNS Dynamics
Dhwani Gangal, K. K. Venkataratnam
In this work, we present a comprehensive semiclassical analysis of black hole radiation in a spatially flat FRW Universe for two fundamental nonclassical states: the Squeezed Numbe…
Reheating study of Mexican-Hat-type Potentials
Sudhava Yadav, Akash Yadav, K. K. Venkataratnam
We study reheating in Mexican Hat type potentials, emphasizing the role of the post-inflationary equation-of-state parameter() in shaping observable pred…
Investigation of Super-Poissonian Nonclassical Nature of Inflaton Field in Flat FRW Universe through Cosmological Mandels Parameter
Dhwani Gangal, Sudhava Yadav, K. K. Venkataratnam
This study investigates the nonclassical properties of the inflaton field within the framework of semiclassical gravity by analyzing Cosmological Mandels parameter for Squeezed…