no code implementations • 27 Feb 2020 • S. Abreu, F. Febres Cordero, H. Ita, M. Jaquier, B. Page, M. S. Ruf, V. Sotnikov
We present the analytic form of the two-loop four-graviton scattering amplitudes in Einstein gravity.
High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Phenomenology
no code implementations • 15 Mar 2017 • S. Abreu, F. Febres Cordero, H. Ita, M. Jaquier, B. Page, M. Zeng
We present the first numerical computation of two-loop amplitudes based on the unitarity method.
High Energy Physics - Phenomenology High Energy Physics - Theory
no code implementations • 15 Mar 2017 • S. Abreu, F. Febres Cordero, H. Ita, M. Jaquier, B. Page
In general, it is not known how these contributions can be directly expressed in terms of a product of on-shell tree amplitudes.
High Energy Physics - Phenomenology High Energy Physics - Theory
