3 papers
gr-qc2026
Towards a causal effective thermodynamics of scalar-tensor gravity
Narayan Banerjee, Andrea Giusti, Valerio Faraoni +2
The thermal analogy between the effective fluid of scalar-tensor gravity and Eckart's irreversible thermodynamics is extended to the causal Israel-Stewart model, adopting the minim…
gr-qc2025
Interacting dark sector: a dynamical system perspective
Chonticha Kritpetch, Nandan Roy, Narayan Banerjee
We investigate the interaction between the dark sectors from the point of view of a dynamical system analysis. A general setup for interacting dark energy models that incorporates…
gr-qc2025
Particle production rate for a dynamical system using the path integral approach
Samit Ganguly, Narayan Banerjee, Abhijit Bhattacharyya +1
In this work, we investigate the particle creation rate in a dynamical (Vaidya) spacetime using Feynman's path integral formalism within the framework of the effective action appro…