Cosmological phase transitions: From perturbative particle physics to gravitational waves
Gravitational waves (GWs) were recently detected for the first time. This revolutionary
discovery opens a new way of learning about particle physics through GWs from first-order …
discovery opens a new way of learning about particle physics through GWs from first-order …
Quantisation across bubble walls and friction
A Azatov, G Barni, R Petrossian-Byrne… - Journal of High Energy …, 2024 - Springer
A bstract We quantise from first principles field theories living on the background of a bubble
wall in the planar limit with particular focus on the case of spontaneous breaking of gauge …
wall in the planar limit with particular focus on the case of spontaneous breaking of gauge …
[HTML][HTML] Gravitational waves from composite dark sectors
A bstract We study under which conditions a first-order phase transition in a composite dark
sector can yield an observable stochastic gravitational-wave signal. To this end, we employ …
sector can yield an observable stochastic gravitational-wave signal. To this end, we employ …
Bubble wall velocities with an extended fluid Ansatz
GC Dorsch, DA Pinto - Journal of Cosmology and Astroparticle …, 2024 - iopscience.iop.org
We compute the terminal bubble wall velocity during a cosmological phase transition by
modelling non-equilibrium effects in the plasma with the so-called" extended fluid Ansatz". A …
modelling non-equilibrium effects in the plasma with the so-called" extended fluid Ansatz". A …
Impact of theoretical uncertainties on model parameter reconstruction from GW signals sourced by cosmological phase transitions
Different computational techniques for cosmological phase transition parameters can impact
the gravitational wave (GW) spectra predicted in a given particle physics model. To …
the gravitational wave (GW) spectra predicted in a given particle physics model. To …
[HTML][HTML] First shot of the smoking gun: probing the electroweak phase transition in the 2HDM with novel searches for A → ZH in and final states
T Biekötter, S Heinemeyer, JM No… - Journal of High Energy …, 2024 - Springer
A bstract Recently the ATLAS collaboration has reported the first results of searches for
heavy scalar resonances decaying into a Z boson and a lighter new scalar resonance …
heavy scalar resonances decaying into a Z boson and a lighter new scalar resonance …
Logarithmically divergent friction on ultrarelativistic bubble walls
WY Ai - Journal of Cosmology and Astroparticle Physics, 2023 - iopscience.iop.org
We calculate the friction experienced by ultrarelativistic bubble walls resulting from the 1→ 2
light-to-heavy transition process, with finite-wall-width effects fully taken into account. In this …
light-to-heavy transition process, with finite-wall-width effects fully taken into account. In this …
Primordial black holes from slow phase transitions: a model-building perspective
S Kanemura, M Tanaka, KP Xie - Journal of High Energy Physics, 2024 - Springer
A bstract We investigate the formation of primordial black holes (PBHs) through delayed
vacuum decay during slow cosmic first-order phase transitions. Two specific models, the …
vacuum decay during slow cosmic first-order phase transitions. Two specific models, the …
[HTML][HTML] Naturally small neutrino mass with asymptotic safety and gravitational-wave signatures
A Chikkaballi, K Kowalska, EM Sessolo - Journal of High Energy Physics, 2023 - Springer
A bstract We revisit the dynamical generation of an arbitrarily small neutrino Yukawa
coupling in the Standard Model with trans-Planckian asymptotic safety and apply the same …
coupling in the Standard Model with trans-Planckian asymptotic safety and apply the same …
Primordial magnetogenesis in the two-Higgs-doublet model
MO Olea-Romacho - Physical Review D, 2024 - APS
γ-ray emission of blazars infer the presence of large-scale magnetic fields in the intergalactic
medium, but their origin remains a mystery. Using recent data from MAGIC, HESS, and …
medium, but their origin remains a mystery. Using recent data from MAGIC, HESS, and …