Fireball baryogenesis from early structure formation due to Yukawa forces

Abstract

We show that viable electroweak baryogenesis can be realized without a first-order phase transition if plasma is heated inhomogeneously by nongravitational structure formation in some particle species. Yukawa interactions can mediate relatively long-range attractive forces in the early Universe. This creates an instability and leads to growth of structure in some species even during the radiation dominated era. At temperatures below the electroweak scale, the collapsing and annihilating halos can heat up plasma in fireballs that expand and create the out-of-equilibrium high-temperature environment suitable for generating the baryon asymmetry. The plasma temperature at the time of baryogenesis can be as low as a few MeV, making it consistent with both standard and low-reheat cosmologies.

7 pages, 2 figures

References in corpus (19)

• Challenges for $\Lambda$CDM: An update
• The trouble with $H_0$
• The Sphaleron Rate in the Minimal Standard Model
• Late universe decaying dark matter can relieve the H_0 tension
• Inhomogeneous baryogenesis, cosmic antimatter, and dark matter
• Postinflationary Higgs relaxation and the origin of matter-antimatter asymmetry
• Axion constraints in non-standard thermal histories
• Leptogenesis via Axion Oscillations after Inflation
• MeV sterile neutrinos in low reheating temperature cosmological scenarios
• Charged $B$ Mesogenesis
• Making the Universe at 20 MeV
• Dynamics of neutrino lumps in growing neutrino quintessence
• Primordial black holes as a dark matter candidate in theories with supersymmetry and inflation
• Hot thermal universe endowed with massive dark vector fields and the Hubble tension
• Cosmology of strongly interacting fermions in the early universe
• Direct detection of neutralino dark mattter in non-standard cosmologies
• Searching for Elusive Dark Sectors with Terrestrial and Celestial Observations
• Big-Bang nucleosynthyesis: constraints on nuclear reaction rates, neutrino degeneracy, inhomogeneous and Brans-Dicke models
• High Energy Sphalerons for Baryogenesis at Low Temperatures

Cited by in corpus (4)

• PeV-Scale SUSY and Cosmic Strings from F-term Hybrid Inflation
• Feeding plankton to whales: high-redshift supermassive black holes from tiny black hole explosions
• Late-forming black holes and the antiproton, gamma-ray, and anti-helium excesses
• Dimming Starlight with Dark Compact Objects