Detecting circular polarisation in the stochastic gravitational-wave background from a first-order cosmological phase transition

@article{Ellis2020DetectingCP,
  title={Detecting circular polarisation in the stochastic gravitational-wave background from a first-order cosmological phase transition},
  author={John Ellis and Malcolm Fairbairn and Marek Lewicki and Ville Vaskonen and Alastair Wickens},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2020},
  volume={2020},
  pages={032 - 032}
}
We discuss the observability of circular polarisation of the stochastic gravitational-wave background (SGWB) generated by helical turbulence following a first-order cosmological phase transition, using a model that incorporates the effects of both direct and inverse energy cascades. We explore the strength of the gravitational-wave signal and the dependence of its polarisation on the helicity fraction, ζ*, the strength of the transition, α, the bubble size, R*, and the temperature, T*, at which… 
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11 Citations

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References

SHOWING 1-10 OF 143 REFERENCES

Measuring the net circular polarization of the stochastic gravitational wave background with interferometers

Parity violating interactions in the early Universe can source a stochastic gravitational wave background (SGWB) with a net circular polarization. In this paper, we study possible ways to search for…

Gravitational wave energy budget in strongly supercooled phase transitions

We derive efficiency factors for the production of gravitational waves through bubble collisions and plasma-related sources in strong phase transitions, and find the conditions under which the bubble…

The stochastic gravitational wave background from turbulence and magnetic fields generated by a first-order phase transition

We analytically derive the spectrum of gravitational waves due to magneto-hydrodynamical turbulence generated by bubble collisions in a first-order phase transition. In contrast to previous studies,…

Numerical simulations of gravitational waves from early-universe turbulence

We perform direct numerical simulations of magnetohydrodynamic turbulence in the early universe and numerically compute the resulting stochastic background of gravitational waves and relic magnetic…

Gravitational waves from first-order cosmological phase transitions: lifetime of the sound wave source

We survey systematically the general parametrisations of particle-physics models for a first-order phase transition in the early universe, including models with polynomial potentials both with and…

Polarization analysis of gravitational-wave backgrounds from the correlation signals of ground-based interferometers: Measuring a circular-polarization mode

The Stokes $V$ parameter characterizes asymmetry of amplitudes between right- and left-handed waves, and the nonvanishing value of the $V$ parameter yields a circularly polarized signal.…

LETTER TO THE EDITOR: Relic gravitational waves from colliding bubbles and cosmic turbulence

A stochastic background of gravitational waves can be generated during a cosmological first order phase transition, at least by two distinct mechanisms: collisions of true vacuum bubbles and…

Cosmological phase transitions in warped space: gravitational waves and collider signatures

We study the electroweak phase transition within a 5D warped model including a scalar potential with an exponential behavior, and strong back-reaction over the metric, in the infrared. By means of a…

Sensitivity to a frequency-dependent circular polarization in an isotropic stochastic gravitational wave background

We calculate the sensitivity to a circular polarization of an isotropic stochastic gravitational wave background (ISGWB) as a function of frequency for ground- and space-based interferometers and…

Measurement of parity violation in the early universe using gravitational-wave detectors

...