Kahniashvili Tina, Gogoberidze Grigol, Ratra Bharat
Department of Physics, Kansas State University, 116 Cardwell Hall, Manhattan, Kansas 66506, USA.
Phys Rev Lett. 2005 Oct 7;95(15):151301. doi: 10.1103/PhysRevLett.95.151301. Epub 2005 Oct 4.
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.
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