52 citations · 270 across the 19 of their papers we have counts for
20 papers
Decompactification and the Flat-Space Limit of AdS S Master Correlators
Burkhard Eden, Paul Heslop, Harshal Kulkarni +3
We study the flat-space limit of AdS/CFT holographic correlators while accounting for the simultaneous decompactification of the internal S. We show that this limit is…
On Carrollian and Celestial Correlators in General Dimensions
Harshal Kulkarni, Romain Ruzziconi, Akshay Yelleshpur Srikant
Carrollian holography is a framework for flat space holography, suggesting that gravity in asymptotically flat spacetime in dimensions is dual to a conformal Carrollian field t…
Towards a Flat Space Carrollian Hologram from AdS/CFT
Arthur Lipstein, Romain Ruzziconi, Akshay Yelleshpur Srikant
Finding a concrete example holography in four dimensional asymptotically flat space is an important open problem. A natural strategy is to take the flat space limit of the celebrat…
Celestial charges from a twistor action
Adam Kmec, Lionel Mason, Romain Ruzziconi +1
The celestial symmetries in asymptotically flat spacetimes have a natural geometric interpretation on twistor space in terms of Poisson diffeomorphisms. Using this…
Carrollian Amplitudes and Celestial Symmetries
Lionel Mason, Romain Ruzziconi, Akshay Yelleshpur Srikant
Carrollian holography aims to express gravity in four-dimensional asymptotically flat spacetime in terms of a dual three-dimensional Carrollian CFT living at null infinity. Carroll…
Supersymmetry and the Celestial Jacobi Identity
Adam Ball, Marcus Spradlin, Akshay Yelleshpur Srikant +1
In this paper we study the simplifying effects of supersymmetry on celestial OPEs at both tree and loop level. We find at tree level that theories with unbroken supersymmetry aroun…
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…
Landau Singularities of the 7-Point Ziggurat II
Luke Lippstreu, Marcus Spradlin, Akshay Yelleshpur Srikant +1
We solve the Landau equations to find the singularities of nine three-loop 7-point graphs that arise as relaxations of the graph studied in arXiv:2211.16425. Along the way we estab…
Loop-level gluon OPEs in celestial holography
Rishabh Bhardwaj, Luke Lippstreu, Lecheng Ren +3
We compute one-loop corrections to the OPE of gluons in the celestial conformal field theory corresponding to Yang-Mills coupled to arbitrary matter. We exploit universal hard/soft…
Correlators of Four Light-Ray Operators in CCFT
Shounak De, Yangrui Hu, Akshay Yelleshpur Srikant +1
Building on results in arXiv:2203.04255, we compute the correlator of four gluon light-ray operators in celestial CFT. We find that it is described by Fox H-functions and generaliz…
On Effective Field Theories with Celestial Duals
Lecheng Ren, Marcus Spradlin, Akshay Yelleshpur Srikant +1
We show that associativity of the tree-level OPE in a celestial CFT imposes constraints on the coupling constants of the corresponding bulk theory. These constraints are the same a…
Four-point correlators of light-ray operators in CCFT
Yangrui Hu, Luke Lippstreu, Marcus Spradlin +2
We compute the four-point correlator of two gluon light-ray operators and two gluon primaries from the four-gluon celestial amplitude in signature spacetime. The correlator…
Deformed Algebras in the Celestial CFT
Jorge Mago, Lecheng Ren, Akshay Yelleshpur Srikant +1
We compute the modification of the algebra of soft graviton, gluon and scalar currents in the celestial CFT due to non-minimal couplings. We find that the Jacobi ide…
Celestial Dual Superconformal Symmetry, MHV Amplitudes and Differential Equations
Yangrui Hu, Lecheng Ren, Akshay Yelleshpur Srikant +1
Celestial and momentum space amplitudes for massless particles are related to each other by a change of basis provided by the Mellin transform. Therefore properties of celestial am…
Symbol Alphabets from Plabic Graphs III: n=9
Jorge Mago, Anders Schreiber, Marcus Spradlin +2
Symbol alphabets of n-particle amplitudes in N=4 super-Yang-Mills theory are known to contain certain cluster variables of Gr(4,n) as well as certain algebraic functions of cluster…
Symbol Alphabets from Plabic Graphs II: Rational Letters
Jorge Mago, Anders Schreiber, Marcus Spradlin +2
Symbol alphabets of n-particle amplitudes in N=4 super-Yang-Mills theory are known to contain certain cluster variables of Gr(4,n) as well as certain algebraic functions of cluster…
Spherical Contours, IR Divergences and the geometry of Feynman parameter integrands at one loop
Akshay Yelleshpur Srikant
Spherical contours introduced in \cite{SphericalContours} translate the concept of "discontinuity across a branch cut" to Feynman parameter space. In this paper, we further explore…
Emergent unitarity from the amplituhedron
Akshay Yelleshpur Srikant
We present a proof of perturbative unitarity for SYM, following from the geometry of the amplituhedron. This proof is valid for amplitudes of arbitrary multiplicity…
All-loop cuts from the Amplituhedron
Cameron Langer, Akshay Yelleshpur Srikant
The definition of the amplituhedron in terms of sign flips involves both one-loop constraints and the "mutual positivity" constraint. To gain an understanding of the all-loop integ…
Cutting Deep Into The Amplituhedron
Nima Arkani-Hamed, Cameron Langer, Akshay Yelleshpur Srikant +1
In this letter we compute a canonical set of cuts of the integrand for MHV amplitudes in planar SYM, where all internal propagators are put on-shell. These "deepest cu…