08.06.2012. :: Seminar grupe za cestice i gravitaciju - Voja Radovanovic
U petak 08.06. u 11 h na Institutu za fiziku, u sali 300, Voja Radovanovic ce odrzati seminar pod naslovom
Noncommutative gravity on Moyal plane
We study deformation of gravity on cannonical noncommutative spacetime. The starting point is the local $SO(2,3)$ symmetry on the four dimensional Minkowski space-time. This symmetry is spontaneously breaked down to the local Lorentz symmetry. Then we deform $SO(1,3)$ symmetry. The construction is done perturbatively as an expansion in the NC parameter, using the SW map. As expected, the first order correction vanishes and the second order correction is written in covariant form.