53 citations · 88 across the 10 of their papers we have counts for
10 papers
Light transformation: A Celestial and Carrollian perspective
Sourish Banerjee, Rudranil Basu, Sayali Atul Bhatkar
In this paper, we first study the consequence of spacetime translations and Lorentz transformations on Celestial CFT OPEs. Working with the light transforms of the operators belong…
Perturbative soft photon theorems in de Sitter spacetime
Sayali Bhatkar, Diksha Jain
We define a perturbative S-matrix in a local patch of de Sitter background in the limit when the curvature length scale () is large and study the 'soft' behavior of the scala…
Light transformed gluon correlators in CCFT
Sourish Banerjee, Rudranil Basu, Sayali Atul Bhatkar
In the present work, we study celestial correlators of light transformed gluon operators at tree level. We also discuss the transformation of light transformed operators under the…
Effect of small cosmological constant on electromagnetic memory effect
Sayali Atul Bhatkar
We consider a generic scattering process that takes place in a region of size R inside the static patch of the de Sitter spacetime such that R is smaller than the curvature length…
Asymptotic conservation law with Feynman boundary condition
Sayali Atul Bhatkar
Recently it was shown that classical electromagnetism admits new asymptotic conservation laws \cite{2007.03627}. In this paper we derive the analogue of the first of these asymptot…
New Asymptotic Conservation laws for Electromagnetism
Sayali Atul Bhatkar
We obtain the subleading tail to the memory term in the late time electromagnetic radiative field generated due to a generic scattering of charged bodies. We show that there exists…
Ward identity for loop level soft photon theorem for massless QED coupled to gravity
Sayali Atul Bhatkar
Strominger and his collaborators pioneered the study of equivalence between soft theorems and asymptotic conservation laws. We study this equivalence in the context of loop level s…
Subleading Soft Theorem for arbitrary number of external soft photons and gravitons
Sayali Atul Bhatkar, Biswajit Sahoo
We obtain the subleading soft theorem for a generic theory of quantum gravity, for arbitrary number of soft photons and gravitons and for arbitrary number of finite energy particle…
Second order Galilean fluids & Stokes' law
Nabamita Banerjee, Sayali Atul Bhatkar, Akash Jain
We study the second derivative effects on the constitutive relations of an uncharged parity-even Galilean fluid using the null fluid framework. Null fluids are an equivalent repres…
Conformal Structure of Massless Scalar Amplitudes Beyond Tree level
Nabamita Banerjee, Shamik Banerjee, Sayali Atul Bhatkar +1
We show that the one-loop on-shell four-point scattering amplitude of massless scalar field theory in 4D Minkowski space time, when Mellin transformed to the Celestial sphere…