REVIEW 8 cited by
Non-linearities in cosmological bubble wall dynamics
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
A precise modelling of the dynamics of bubbles nucleated during first-order phase transitions in the early Universe is pivotal for a quantitative determination of various cosmic relics, including the stochastic background of gravitational waves. The equation of motion of the bubble front is affected by the out-of-equilibrium distributions of particle species in the plasma which, in turn, are described by the corresponding Boltzmann equations. In this work we provide a solution to these equations by thoroughly incorporating the non-linearities arising from the population factors. Moreover, our methodology relies on a spectral decomposition that leverages the rotational properties of the collision integral within the Boltzmann equations. This novel approach allows for an efficient and robust computation of both the bubble speed and profile. We also refine our analysis by including the contributions from the electroweak gauge bosons. We find that their impact is dominated by the infrared modes and proves to be non-negligible, contrary to the naive expectations.
Forward citations
Cited by 8 Pith papers
-
Entropy production at electroweak bubble walls from scalar field fluctuations
Scalar fluctuations produce a nonvanishing entropy discontinuity across an electroweak bubble wall even in the zero-friction limit, showing LTE-based wall velocity upper bounds cannot be saturated.
-
Multi-step Strong First-Order Electroweak Phase Transitions in the Inverted Type-I 2HDM: Parameter Space, Gravitational Waves, and Collider Phenomenology
In the inverted Type-I 2HDM, one-step and two-step strong first-order electroweak phase transitions live in largely separate parameter regions, and LISA-detectable gravitational wave signals come predominantly from th...
-
Benchmarking wall velocities in cosmological phase transitions: Fluid Ansatz and WallGo
The fluid-Ansatz and WallGo methods agree for mild phase transitions but diverge by tens of percent for strong ones, where the semi-classical approximation itself may break down.
-
Thermal Masses and Bubble-Wall Friction in Cosmological Phase Transitions
Including thermal masses in both the Boltzmann source and collision terms removes the infrared gauge-boson enhancement, making W-boson friction subleading in the singlet-extended Standard Model.
-
Probing Flavour Deconstruction via Primordial Gravitational Waves
Flavour deconstruction phase transitions can generate detectable gravitational waves, but their spectra typically peak above the millihertz range, making LISA detection possible yet not guaranteed.
-
Investigating a strong first-order electroweak phase transition in the RxSM at future linear $e^+e^-$ colliders and LISA
In the RxSM, singlet-driven SFOEWPTs yield strong LISA GW signals with SM-like Higgs couplings, while doublet-driven ones yield large κ_λ deviations visible at ILC1000 but weak GWs.
-
Machine Learning Left-Right Breaking from Gravitational Waves
An ML-guided scan combined with a high-precision effective field theory finds a small region of the minimal Left-Right Symmetric Model where the first parity-breaking phase transition yields gravitational waves detect...
-
The Bubble Wall Velocity in Local Thermal Equilibrium and Energy Budget with Full Effective Potential
Using the full one-loop effective potential with the LTE approximation, the authors find that for xSM deflagration, bag-model gravitational wave peak predictions can differ by up to 48% in frequency and 90% in amplitu...
Discussion (0). Sign in to comment.