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Cosmological Correlators from Generating Potentials and Projective Geometry
Aswini Bala, Sachin Jain, Deep Mazumdar
We introduce novel scalar generating potentials to compute three and four point cosmological correlators in orthogonal Grassmannian space. These correlators are obtained by applyin…
eal Ambitwistors & Massive Twistors for CFT
Aswini Bala, Sachin Jain, Deep Mazumdar +1
We develop a real twistor-space formulation of four-dimensional CFT Wightman correlators. We write the conformal generators and little-group constraints in ambitwistor space. The q…
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…