Gravitational Radiation from Primordial Helical MHD Turbulence
Tina Kahniashvili, Grigol Gogoberidze, and Bharat Ratra
TL;DR
This paper investigates how primordial helical MHD turbulence from electroweak phase transitions generates gravitational waves with distinctive spectra, potentially detectable by LISA, differing from unmagnetized cases.
Contribution
It introduces a model for GW production from inverse-cascade helical MHD turbulence during EWPT, highlighting differences from unmagnetized scenarios.
Findings
GW spectrum peaks at lower frequency with larger amplitude
Detection prospects with LISA are promising
Helical MHD turbulence enhances GW signals
Abstract
We consider gravitational waves (GWs) generated by primordial inverse-cascade helical magneto-hydrodynamical (MHD) turbulence produced by bubble collisions at the electroweak phase transitions (EWPT). Compared to the unmagnetized EWPT case, the spectrum of MHD-turbulence-generated GWs peaks at lower frequency with larger amplitude and can be detected by the proposed Laser Interferometer Space Antenna (LISA).
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