12 citations · 21 across the 7 of their papers we have counts for
7 papers
Revisiting Lagrangian Formulation of Stochastic inflation
Rajat Kumar Panda, Sukanta Panda, Abbas Tinwala
We revisit the Lagrangian formulation of stochastic inflation, where the path-integral approach is employed to derive the Langevin equation governing the dynamics of long-wavelengt…
One-particle irreducibility of Vilkovisky-DeWitt effective action
Sukanta Panda, Abbas Tinwala, Ketankumar Jadav
The effective action formalism introduced by Vilkovisky and later modified by DeWitt is completely covariant suitable for obtaining an effective action that is independent of the p…
Open EFT treatment of Inflation with Thermal Initial Conditions
Abbas Tinwala, Ashish Narang, Subhendra Mohanty +1
Investigating the thermal inflationary model, we introduce stochastic effects, incorporating a cutoff parameter which distinguishes between quantum and classical modes. Testing…
Two-loop Vilkovisky-DeWitt effective action for scalar field minimally coupled with gravity
Ketankumar Jadav, Sukanta Panda, Abbas Altafhussain Tinwala
It is known that Vilkovisky-DeWitt's effective action is gauge invariant off-shell and independent of quantum field parametrization. In this work, we perform the calculation of the…
Local momentum space: Scalar field and gravity
Sukanta Panda, Abbas Altafhussain Tinwala, Archit Vidyarthi
We use the local momentum space technique to obtain an expansion of the Feynman propagators for scalar field and graviton up to first order in the background curvature. The express…
Ultraviolet Unitarity Violations in Non-minimally Coupled Scalar-Starobinsky Inflation
Sukanta Panda, Abbas Altafhussain Tinwala, Archit Vidyarthi
We perform the calculation for tree-level ultraviolet unitarity violation scales for scalar- inflation models by including an additional -type term. Due to certain…
Covariant Effective Action for Generalized Proca Theories
Sukanta Panda, Abbas Tinwala, Archit Vidyarthi
We investigate quantum stability of the generalised Proca theories in curved spacetime treating gravity as a dynamical field. To compute the quantum gravitational corrections we ev…