Sound velocity effects on the phase transition gravitational wave spectrum in the sound shell model
arXiv:2112.14650 · doi:10.1103/PhysRevD.105.103513
Abstract
A cosmological first-order phase transition gravitational wave could provide a novel approach to studying the early Universe. In most cases, the acoustic gravitational wave from the sound wave mechanism is dominant. Considering different sound velocities in symmetric and broken phases, we study sound velocity effects on the acoustic phase transition gravitational wave spectra in the sound shell model. We demonstrate that different sound velocities could obviously modify the peak frequency and peak amplitude of the gravitational wave power spectra. Therefore, taking more realistic sound velocities might provide more accurate predictions for various gravitational wave experiments.
Published version in Physical Review D, 28 pages, 8 figures
References in corpus (9)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- Laser Interferometer Space Antenna
- The TianQin project: current progress on science and technology
- Bubble wall velocity: heavy physics effects
- From Boltzmann equations to steady wall velocities
- A sonic boom in bubble wall friction
- Hydrodynamics of phase transition fronts and the speed of sound in the plasma
- Bubble wall velocity beyond leading-log approximation in electroweak phase transition