Matter and Antimatter in the Universe
arXiv:1204.4186 · doi:10.1088/1367-2630/14/9/095012
Abstract
We review observational evidence for a matter-antimatter asymmetry in the early universe, which leads to the remnant matter density we observe today. We also discuss observational bounds on the presence of antimatter in the present day universe, including the possibility of a large lepton asymmetry in the cosmic neutrino background. We briefly review the theoretical framework within which baryogenesis, the dynamical generation of a matter-antimatter asymmetry, can occur. As an example, we discuss a testable minimal model that simultaneously explains the baryon asymmetry of the universe, neutrino oscillations and dark matter.
Invited contribution to the New Journal of Physics Focus Issue "Origin of Matter" (New J. Phys. 14 (2012) 095012); this version is identical to the published article up to a few updates in the references
References in corpus (18)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Observation of electron-antineutrino disappearance at Daya Bay
- How to find neutral leptons of the nuMSM?
- Sterile Neutrinos as the Origin of Dark and Baryonic Matter
- Cosmology seeking friendship with sterile neutrinos
- Quantum Boltzmann Equations and Leptogenesis
- Baryon Asymmetry of the Universe in the NuMSM
- Relic density of neutrinos with primordial asymmetries
- Cosmological lepton asymmetry with a nonzero mixing angle θ_{13}
- Constraining The Universal Lepton Asymmetry
- Medium corrections to the CP-violating parameter in leptogenesis
- The Sphaleron Rate through the Electroweak Cross-over
- Leptogenesis: The Other Cuts
- Antimatter in the Milky Way
- Coherent quantum Boltzmann equations from cQPA
- Quantum corrections to leptogenesis from the gradient expansion
- Primordial Nucleosynthesis: The Predicted and Observed Abundances and Their Consequences