Gravitational Radiation from Primordial Helical Inverse Cascade MHD Turbulence

Details Gravitational Radiation from Primordial Helical Inverse Cascade MHD Turbulence Gravitational Radiation from Primordial Helical Inverse Cascade MHD Turbulence

2008-09-11

arxiv.org/abs/0809.1899v3

Phys.Rev.D78:123006,2008; Erratum-ibid.D79:109901,2009

Astronomy and Astrophysics

Astrophysics

13 pages, 4 figures; typos corrected

Scientific paper

10.1103/PhysRevD.78.123006

We consider the generation of gravitational waves by primordial helical inverse cascade magnetohydrodynamic (MHD) turbulence produced by bubble collisions at the electroweak phase transition. We extend the previous study \cite{kgr08} by considering both currently discussed models of MHD turbulence. For popular electroweak phase transition parameter values, the generated gravitational wave spectrum is only weakly dependent on the MHD turbulence model. Compared to the unmagnetized electroweak phase transition case, the spectrum of MHD-turbulence-generated gravitational waves peaks at lower frequency with larger amplitude and can be detected by the proposed Laser Interferometer Space Antenna

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