5 citations · 8 across the 5 of their papers we have counts for
7 papers
Unitarity, Recursion and Soft Limits in (EA)dS through Dressing
Arhum Ansari, Deep Mazumdar, Brijesh Thakkar
Using the recently developed framework in which cosmological correlators in (E)AdS are represented as flat-space amplitudes dressed by auxiliary propagators, we show that several s…
Cosmological Cutting Rules from Flat-Space Unitarity via Dressing
Arhum Ansari, Sachin Jain, Deep Mazumdar
Using cosmological dressing rules, we uplift flat-space unitarity cuts to discontinuity relations for dS/EAdS observables. In this representation, Cutkosky delta functions map dire…
AdS Boundary Wightman functions in Twistor Space: Factorization, Conformal blocks and a Double Copy
Arhum Ansari, Sachin Jain, Dhruva K. S
We study real-time holographic four point Wightman functions involving scalars, photons, gluons and gravitons in the Poincare patch of AdS. We show that when the momenta of the…
Bootstrapping LSS perturbation theory beyond third order
Arhum Ansari, Arka Banerjee, Sachin Jain +1
Bootstrap techniques relying on the constraints imposed by Extended Galilean Invariance (EGI), have proved to be very useful in the context of perturbation theory of the Large Scal…
Time Non-locality in Dark Matter and LSS
Arhum Ansari, Arka Banerjee, Sachin Jain +1
We explore the intriguing phenomenon of time non-locality in the evolution of dark matter and Large Scale Structure (LSS). Recently in\,\cite{Donath:2023sav}, it was shown that tim…
Inflationary non-Gaussianities in alpha vacua and consistency with conformal symmetries
Arhum Ansari, Pinak Banerjee, Prateksh Dhivakar +2
We study the conformal invariance of inflationary non-Gaussianities associated with scalar fluctuations in a non-Bunch-Davies initial state, known as the -vacuum, in single-fiel…
Q-balls in the sky
Arhum Ansari, Lalit Singh Bhandari, Arun M. Thalapillil
There may exist extended configurations in the dark matter sector that are analogues of structures in the visible sector. In this work, we explore non-topological solitonic configu…