5 citations · 9 across the 6 of their papers we have counts for
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Gluons and Knots
Alfredo Guevara
We argue that the scattering amplitude of a single minus helicity gluon with arbitrarily many positive helicity gluons is topological. The amplitude is constant in chambers of kine…
Single-Minus Graviton Amplitudes from Matrix Theory
Alfredo Guevara, Alexandru Lupsasca, Juan Maldacena +1
The -point single-minus graviton amplitudes are nonzero in a special kinematic region that preserves some supersymmetry when embedded in supergravity. We compute these amplitude…
Single-minus graviton tree amplitudes are nonzero
Alfredo Guevara, Alexandru Lupsasca, David Skinner +2
Single-minus tree-level -graviton scattering amplitudes are revisited. Often presumed to vanish, they are shown here to be nonvanishing for certain "half-collinear" configuratio…
Celestial Quantum Error Correction II: From Qudits to Celestial CFT
Alfredo Guevara, Yangrui Hu
A holographic CFT description of asymptotically flat spacetimes inherits vacuum degeneracies and IR divergences from its gravitational dual. We devise a Quantum Error Correcting (Q…
Effective interactions of the open bosonic string via field theory
Lucia Garozzo, Alfredo Guevara
We describe a method to extract an effective Lagrangian description for open bosonic strings, at zero transcendentality. The method relies on a particular formulation of its scatte…
Multiparticle Contributions to the Celestial OPE
Alfredo Guevara, Yangrui Hu, Sabrina Pasterski
We start by defining two-particle operators that appear in celestial CFT. We then show how to compute their OPE coefficients with the known single-particle operators at tree level…
Celestial Quantum Error Correction I: Qubits from Noncommutative Klein Space
Alfredo Guevara, Yangrui Hu
Quantum gravity in 4D asymptotically flat spacetimes features spontaneous symmetry breaking due to soft radiation hair, intimately tied to the proliferation of IR divergences. A ho…