2 citations · 4 across the 8 of their papers we have counts for
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Higher-Spin Correlators in dS
Shounak De, Hayden Lee
We study momentum-space correlators in minimal higher-spin gravity in using its holographic vector-model description. Connected -point functions in this model ar…
The Vasiliev Grassmannian
Shounak De, Hayden Lee
We express the scalar four-point function of minimal Vasiliev higher-spin gravity in de Sitter space as an integral over the orthogonal Grassmannian OGr(4,8). The full crossing-sym…
De Sitter Light-Ray Operators
Shounak De, Yakov Landau
In this work, we initiate the study of light-ray operators in four-dimensional de Sitter space focusing on null integrals of the stress tensor. In Minkowski space, the null integra…
Hidden Zeros of the Cosmological Wavefunction
Shounak De, Shruti Paranjape, Andrzej Pokraka +2
Motivated by the recent discovery of hidden zeros in particle and string amplitudes, we characterize zeros of individual graph contributions to the cosmological wavefunction of a s…
A physical basis for cosmological correlators from cuts
Shounak De, Andrzej Pokraka
Significant progress has been made in our understanding of the analytic structure of FRW wavefunction coefficients, facilitated by the development of efficient algorithms to derive…
From Feynman diagrams to the amplituhedron: a gentle review
Shounak De, Dmitrii Pavlov, Marcus Spradlin +1
In this article we review, for a mathematical audience, the computation of (tree-level) scattering amplitudes in Yang-Mills theory in detail, in order to bridge the gap in understa…
Surfaceology for Colored Yukawa Theory
Shounak De, Andrzej Pokraka, Marcos Skowronek +2
Arkani-Hamed and collaborators have recently shown that scattering amplitudes for colored theories can be expressed as integrals over combinatorial objects simply constructed from…
Scalar-Graviton Amplitudes and Celestial Holography
Adam Ball, Shounak De, Akshay Yelleshpur Srikant +1
We compute scattering amplitudes involving one massive scalar and two, three, or four gravitons. We show that when the conformal dimension of the massive scalar is set to zero, the…
Dual resonant amplitudes from Drinfel'd twists
Rishabh Bhardwaj, Shounak De
We postulate the existence of a family of dual resonant, four-point tachyon amplitudes derived using invertible coproduct maps called Drinfel'd twists. A sub-family of these amplit…