title: Polarized cosmological gravitational waves from primordial helical turbulence.
abstract: We show that helical turbulence produced during a first-order phase transition generates circularly polarized cosmological gravitational waves (GWs). The characteristic frequency of these GWs for an extreme case of the phase transition model is around 10(-3)-10(-2) Hz with an energy density parameter as high as 10(-12)-10(-11). The possibility of detection is briefly discussed.
authors.affiliation: Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506, USA.
authors.forename: Tina
authors.initials: T
authors.lastname: Kahniashvili
authors.forename: Grigol
authors.initials: G
authors.lastname: Gogoberidze
authors.forename: Bharat
authors.initials: B
authors.lastname: Ratra