Shape of the acoustic gravitational wave power spectrum from a first order phase transition

  title={Shape of the acoustic gravitational wave power spectrum from a first order phase transition},
  author={M. Hindmarsh and S. Huber and K. Rummukainen and D. J. Weir},
  • M. Hindmarsh, S. Huber, +1 author D. J. Weir
  • Published 2017
  • Physics
  • We present results from large-scale numerical simulations of a first order thermal phase transition in the early universe, in order to explore the shape of the acoustic gravitational wave and the velocity power spectra. We compare the results with the predictions of the recently proposed sound shell model. For the gravitational wave power spectrum, we find that the predicted k−3 behaviour, where k is the wavenumber, emerges clearly for detonations. The power spectra from deflagrations show… CONTINUE READING
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