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One-loop same helicity YM amplitudes from BG currents
Pratik Chattopadhyay, Kirill Krasnov
We propose and prove a new formula for the one-loop all same helicity Yang-Mills amplitudes. These amplitudes are seen to arise as a sum of products of two tree-level Berends-Giele…
Pure Lorentz spin connection theories and uniqueness of General Relativity
Kirill Krasnov, Ermis Mitsou
General Relativity can be reformulated as a diffeomorphism invariant gauge theory of the Lorentz group, with Lagrangian of the type , where is the curvature 2-for…
Flat Self-dual Gravity
Kirill Krasnov, Evgeny Skvortsov
We construct a new covariant action for "flat" self-dual gravity in four spacetime dimensions. The action has just one term, but when expanded around an appropriate background give…
Actions for Self-dual Higher Spin Gravities
Kirill Krasnov, Evgeny Skvortsov, Tung Tran
Higher Spin Gravities are scarce, but covariant actions for them are even scarcer. We construct covariant actions for contractions of Chiral Higher Spin Gravity that represent high…
Spin(11,3), particles and octonions
Kirill Krasnov
The fermionic fields of one generation of the Standard Model, including the Lorentz spinor degrees of freedom, can be identified with components of a single real 64-dimensional sem…