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={Mark Hindmarsh and Stephan J. Huber and Kari Rummukainen and David J. Weir},
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… Expand
The gravitational waves from the first-order phase transition with a dimension-six operator
We investigate in details the gravitational wave (GW) from the first-order phase transition (PT) in the extended standard model of particle physics with a dimension-six operator, which is capable ofExpand
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 bubbleExpand
Effect of density fluctuations on gravitational wave production in first-order phase transitions
We study the effect of density perturbations on the process of first-order phase transitions and gravitational wave production in the early Universe. We are mainly interested in how the distributionExpand
Gravitational waves from first-order phase transitions: towards model separation by bubble nucleation rate
We study gravitational-wave production from bubble collisions in a cosmic first-order phase transition, focusing on the possibility of model separation by the bubble nucleation rate dependence of theExpand
Electroweak bubble wall expansion: gravitational waves and baryogenesis in Standard Model-like thermal plasma
Computing the properties of the bubble wall of a cosmological first order phase transition at electroweak scale is of paramount importance for the correct prediction of the baryon asymmetry of theExpand
Gravitational waves from bubble collisions in FLRW spacetime
Stochastic gravitational wave background (SGWB) is a promising tool to probe the very early universe where the standard model of particle physics and cosmology are connected closely. As a possibleExpand
Vacuum bubble collisions: From microphysics to gravitational waves
We comprehensively study the effects of bubble wall thickness and speed on the gravitational wave emission spectrum of collisions of two vacuum bubbles. We numerically simulate a large dynamicalExpand
Model-independent features of gravitational waves from bubble collisions
We study the gravitational radiation produced by the collisions of bubble walls or thin fluid shells in cosmological phase transitions. Using the so-called envelope approximation, we obtainExpand
Exotic gravitational wave signatures from simultaneous phase transitions
A bstractWe demonstrate that the relic gravitational wave background from a multi-step phase transition may deviate from the simple sum of the single spectra, for phase transitions with similarExpand
New Sensitivity Curves for Gravitational-Wave Experiments
Gravitational waves (GWs) from strong first-order phase transitions (SFOPTs) in the early Universe are a prime target for upcoming GW experiments. In this paper, I construct novel peak-integratedExpand