Effects of primordial helicity on CMB
  I present here a brief overview of the effects caused by parity violating cosmological sources (such as magnetic or kinetic helicity) on the CMB fluctuations. I discuss also primordial helicity induced relic gravitational waves. All these effects can serve as cosmological tests for primordial helicity detection. 
Tina Kahniashvili (1,2) ((1)Kansas State University (USA), (2) Center   for Plasma Astrophysics (Georgia))