6 papers
Quantum graviton scattering with definite helicities in the null surface formulation. III: Fourth-order recursion and ultraviolet finiteness
C. N. Kozameh, G. O. Depaola
We extend the perturbative null-surface formulation (NSF) scattering map to fourth order and derive an all-order recursion for the quantum cut. After the antipodal matching, both c…
Quantum graviton scattering with definite helicities in the null surface formulation, Part II: Third-order scattering and the exchange channels \author{C.~N.~Kozameh \and G.~O.~Depaola}
Carlos Kozameh, Gerardo Depaola
We derive the graviton scattering map in the null-surface formulation (NSF) through third order in perturbations of Minkowski spacetime. The rational structure of the exact NSF equ…
Quantum graviton scattering with definite helicities in the null surface formulation
Carlos Kozameh, Gerardo Depaola
We develop a helicity-resolved description of quantum graviton scattering in the Null Surface Formulation (NSF) of gravity. Dynamical data are Bondi shear modes at null infinity ($…
Ultraviolet-Finite Perturbative Expansion of Quantum Gravity at Null Infinity
Carlos N. Kozameh, Gerardo O. Depaola
We present a perturbative formulation of quantum gravity for asymptotically flat vacuum spacetimes based on the Null Surface Formulation (NSF), in which the expansion is ultraviole…
Pfaffian Systems, Cartan Connections, and the Null Surface Formulation of General Relativity
Emanuel Gallo, Carlos N. Kozameh
This review examines the role of differential forms, Pfaffian systems, and hypersurfaces in general relativity. These mathematical constructions provide the essential tools for gen…
Quantum theory of asymptotically flat spacetimes
Carlos N. Kozameh, Lautaro Zapata-Altuna
A quantum theory of asymptotically flat space-times is presented using the solutions of the Null Surface Formulation (NSF) field equations in a perturbative scheme. Free-field comm…