Baryon asymmetry from electroweak tachyonic preheating

2003/10/30 by Anders Tranberg, Jan Smit · 4 citations
Computer Science · Physics and Astronomy · #Asymmetry #Baryogenesis #Baryon #Baryon asymmetry #Computational Physics and Python Applications #Effective field theory #Electroweak interaction #Higgs boson #Lattice (music) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Tachyon #astro-ph #hep-lat #hep-ph

paper · pdf · doi:10.1088/1126-6708/2003/11/016

published as JHEP 0311:016,2003 · 30 pages, 9 figures

arxiv created 2003/10/30 · openalex publication_date 2003/11/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We consider a scenario in which the baryon asymmetry was created in the early universe during a cold electroweak transition. The spinodal instability of the Higgs field caused by a rapid change of sign of its effective mass-squared parameter induces tachyonic preheating. We study the development of Chern-Simons number in this transition by numerical lattice simulations of the SU(2)-Higgs model with an added effective CP-violating term. A net asymmetry is produced, and we study its dependence on the size of CP violation and the ratio of Higgs to W mass.

Citations

• Measuring the broken phase sphaleron rate nonperturbatively
• Opening the window for electroweak baryogenesis
• Two-color QCD in 3D at finite baryon density
• Commutator of the Quark Mass Matrices in the Standard Electroweak Model and a Measure of MaximalCPNonconservation
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Progress in Electroweak Baryogenesis
• Chern-Simons number asymmetry from CP violation at electroweak tachyonic preheating
• CP-Violation in the Renormalizable Theory of Weak Interaction
• On anomalous electroweak baryon-number non-conservation in the early universe

Cited by

• Cosmological backgrounds of gravitational waves
• Natural cold baryogenesis from strongly interacting electroweak symmetry breaking
• Bubble expansion and the viability of singlet-driven electroweak baryogenesis
• Tachyonic preheating using 2PI-1/N dynamics and the classical approximation