First order gravity on the light front

Sergey Alexandrov (1)

1 L2C - Laboratoire Charles Coulomb

After a brief review of unusual features of the light front canonical formulations of field theories, I present the analysis of the canonical structure of the first order formulation of general relativity on a lightlike foliation. It appears to be quite different from the usual spacelike case leading, for instance, to the presence of tertiary constraints. Besides, I discuss the issue of the zero modes and argue that there might be some hidden correspondence with two-dimensional theories.

Domaines: Physique des Hautes Energies - Théorie [hep-th]

Sergey Alexandrov. First order gravity on the light front. Frontiers of Fundamental Physics 14, Jul 2014, Marseille, France. ⟨hal-01052742⟩