In four-space-time dimensional string/brane theory, obtained either through compactification of the extra spatial dimensions, or by appropriate restriction to brane worlds with three large spatial dimensions, the rich physics potential associated with the presence of non-trivial Kalb-Ramond (KR) axion-like fields has not been fully exploited so far. In this talk, I discuss a scenario whereby such fields produce spontaneous Lorentz- and CPT-violating cosmological backgrounds over which strings propagate, which in the early Universe can lead to Baryogenesis through Leptogenesis in models with heavy right-handed neutrinos.
|Journal of Physics: Conference Series
|Published - 22 Feb 2018
|International Workshop on CPT and Lorentz Symmetry in Field Theory 2017 - Faro, Portugal
Duration: 6 Jul 2017 → 7 Jul 2017