7 papers
Effect of non-conformal deformation on the gapped quasi-normal modes and the holographic implications
Ashis Saha, Sunandan Gangopadhyay
The spectral curve of quasinormal modes for a massive real scalar field in the background of a non-conformal black brane geometry has been obtained by utilizing a Frobenius type ne…
Holographic Brownian dynamics of a heavy particle in a boosted thermal plasma background
Anirban Roy Chowdhury, Ashis Saha, Sunandan Gangopadhyay
In this work, we have performed a detailed holographic analysis of the stochastic dynamics of a heavy particle propagating through a strongly coupled plasma moving with a constant…
Null reduction and dynamical realization of Carrollian conformal symmetries
Ashis Saha, Rabin Banerjee, Sunandan Gangopadhyay
We start from a Lorentzian action in a deformed light-cone background and applying the method of null reduction leads to a Carrollian action in one lower spacetime dimensions. We a…
Gauge interactions and the Galilean limit
Ashis Saha, Rabin Banerjee, Sunandan Gangopadhyay
The gauge invariant minimal couplings for a class of relativistic free matter fields with global symmetry (related to usual charge conservation) have been obtained by incorporating…
Investigating the role of mutual information in the Page curve for a functional renormalization group improved Schwarzschild black hole
Ashis Saha, Anirban Roy Chowdhury, Sunandan Gangopadhyay
The present work delves into probing the importance of mutual information of relevant subsystems in obtaining the correct time-evolution of fine-grained entropy of Hawking radiatio…
A holographic realization of correlation and mutual information
Ashis Saha, Anirban Roy Chowdhury, Sunandan Gangopadhyay
The status of the inequality existing between mutual information and (normalized) thermal two-point connected correlation function, namely, $I(A:B)\ge\frac{(\expval{\mathcal{O}_{A}…