3 papers
hep-th2026
Quantum corrections to the black hole entropy using the brick wall model
Gopinath Guin, Arpita Jana, Sunandan Gangopadhyay
It was suggested by 't Hooft that to avoid the divergence of the free energy or entropy of the probe fields, one has to introduce an infrared (IR) cutoff. This introduction of the…
hep-th2026
One-point holographic correlator in the expanding universe
Souvik Paul, Gopinath Guin, Sunandan Gangopadhyay
In this article, we have calculated the time-dependent thermal one-point function of massive operators within an expanding universe. We employ the Randall-Sundrum II braneworld mod…
gr-qc2024
Renormalization group improved cosmology in the presence of a stiff matter era
Gopinath Guin, Soham Sen, Sunandan Gangopadhyay
In \href{https://link.aps.org/doi/10.1103/PhysRevD.92.103004}{Phys. Rev. D 92 (2015) 103004}, simple analytical solutions of the Friedman equations were obtained for a universe hav…