A hybrid simulation of gravitational wave production in first-order phase transitions

  title={A hybrid simulation of gravitational wave production in first-order phase transitions},
  author={Ryusuke Jinno and Thomas Konstandin and Henrique Rubira},
  journal={Journal of Cosmology and Astroparticle Physics},
The LISA telescope will provide the first opportunity to probe the scenario of a first-order phase transition happening close to the electroweak scale. In thermal transitions, the main contribution to the GW spectrum comes from the sound waves propagating through the plasma. Current estimates of the GW spectrum are based on numerical simulations of a scalar field interacting with the plasma or on analytical approximations — the so-called sound shell model. In this work we present a novel setup… 
Model-independent energy budget for LISA
We provide an easy method to obtain the kinetic energy fraction in gravitational waves, generated during a cosmological first-order phase transition, as a function of only the wall velocity and
Gravitational waves from colliding vacuum bubbles in gauge theories
<jats:p>We study production of gravitational waves (GWs) in strongly supercooled cosmological phase transitions in gauge theories. We extract from two-bubble lattice simulations the scaling of the GW
Causal gravitational waves as a probe of free streaming particles and the expansion of the Universe
The low frequency part of the gravitational wave spectrum generated by local physics, such as a phase transition or parametric resonance, is largely fixed by causality, offering a clean window into
Effective picture of bubble expansion
Recently the thermal friction on an expanding bubble from the cosmic first-order phase transition has been calculated to all orders of the interactions between the bubble wall and thermal plasma,
Whispers from the dark side: Confronting light new physics with NANOGrav data
The NANOGrav collaboration has recently observed first evidence of a gravitational wave background (GWB) in pulsar timing data. Here we explore the possibility that this GWB is due to new physics,
Finding sound shells in LISA mock data using likelihood sampling
We study to what extent LISA can observe features of gravitational wave spectra originating from cosmological first-order phase transitions. We focus on spectra which are of the form of double-broken
Speed of sound in cosmological phase transitions and effect on gravitational waves
The energy budget for gravitational waves of a cosmological first order phase transitions depends on the speed of sound in the thermal plasma in both phases around the bubble wall. Working in the
Generation of gravitational waves from freely decaying turbulence
. We study the stochastic gravitational wave background (SGWB) produced by freely decaying vortical turbulence in the early Universe. We thoroughly investigate the time correlation of the velocity
Sound velocity effects on the phase transition gravitational wave spectrum in the sound shell model
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
Electroweak bubble wall expansion: gravitational waves and baryogenesis in Standard Model-like thermal plasma
Abstract 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


Gravitational waves from the sound of a first order phase transition.
It is found that the compression waves in the fluid continue to be a source of GWs long after the bubbles have merged, a new effect not taken properly into account in previous modeling of the GW source.
Energy budget of cosmological first-order phase transitions
The study of the hydrodynamics of bubble growth in first-order phase transitions is very relevant for electroweak baryogenesis, as the baryon asymmetry depends sensitively on the bubble wall
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
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 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
Numerical simulations of acoustically generated gravitational waves at a first order phase transition
We present details of numerical simulations of the gravitational radiation produced by a first order thermal phase transition in the early universe. We confirm that the dominant source of
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
Model-independent energy budget of cosmological first-order phase transitions—A sound argument to go beyond the bag model
We study the energy budget of a first-order cosmological phase transition, which is an important factor in the prediction of the resulting gravitational wave spectrum. Formerly, this analysis was
Towards an all-orders calculation of the electroweak bubble wall velocity
We analyze Higgs condensate bubble expansion during a first-order electroweak phase transition in the early Universe. The interaction of particles with the bubble wall can be accompanied by the
Cosmic separation of phases
A first-order QCD phase transition that occurred reversibly in the early universe would lead to a surprisingly rich cosmological scenario. Although observable consequences would not necessarily