Revisiting the envelope approximation: Gravitational waves from bubble collisions

@article{Weir2016RevisitingTE,
  title={Revisiting the envelope approximation: Gravitational waves from bubble collisions},
  author={David J. Weir},
  journal={Physical Review D},
  year={2016},
  volume={93},
  pages={124037}
}
  • D. Weir
  • Published 28 April 2016
  • Physics
  • Physical Review D
We study the envelope approximation and its applicability to first-order phase transitions in the early universe. We demonstrate that the power laws seen in previous studies exist independently of the nucleation rate. We also compare the envelope approximation prediction to results from large-scale phase transition simulations. For phase transitions where the contribution to gravitational waves from scalar fields dominates over that from the coupled plasma of light particles, the envelope… 

Figures and Tables from this paper

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 obtain
Gravitational waves from bubble dynamics: beyond the envelope
We study gravitational-wave production from bubble dynamics (bubble collisions and sound waves) during a cosmic first-order phase transition with an analytic approach. We model the system with the
Gravitational waves from vacuum first-order phase transitions: From the envelope to the lattice
We conduct large scale numerical simulations of gravitational wave production at a first-order vacuum phase transition. We find a power law for the gravitational wave power spectrum at high wave
Gravitational waves from first-order phase transitions: ultra-supercooled transitions and the fate of relativistic shocks
We study the gravitational wave (GW) production in extremely strong first order phase transitions where the latent heat density dominates the plasma energy density, $\alpha \gtrsim 1$. In such
Gravitational waves from bubble walls
We present a general method for computing the gravitational radiation arising from the motion of bubble walls or thin fluid shells in cosmological phase transitions. We discuss the application of
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 dynamical
Gravitational waves from first order cosmological phase transitions in the Sound Shell Model
We calculate gravitational wave power spectra from first order early Universe phase transitions using the Sound Shell Model. The model predicts that the power spectrum depends on the mean bubble
Gravitational radiation from a bulk flow model
We perform simulations in a simple model that aims to mimic the hydrodynamic evolution of a relativistic fluid during a cosmological first-order phase transitions. The observable we are concerned
Universal gravitational-wave signatures from heavy new physics in the electroweak sector
We calculate the gravitational-wave spectra produced by the electroweak phase transition with TeV-scale Beyond-Standard-Model physics in the early universe. Our study captures the effect of quantum
...
1
2
3
4
5
...