From the 1 of 6 linked papers with an AI index.
6 papers
Unitarity, Recursion and Soft Limits in (EA)dS through Dressing
Arhum Ansari, Deep Mazumdar, Brijesh Thakkar
The paper shows that many properties of cosmological correlators in (E)AdS can be derived from flat‑space amplitudes by dressing them with auxiliary propagators, establishing cutti…
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…
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…
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…
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-fie…