Possible Origin of Antimatter Regions in the Baryon Dominated Universe

@article{Khlopov2000PossibleOO,
  title={Possible Origin of Antimatter Regions in the Baryon Dominated Universe},
  author={Maxim Yu. Khlopov and Sergei G. Rubin and Alexander S. Sakharov},
  journal={Physical Review D},
  year={2000},
  volume={62},
  pages={083505}
}
We discuss the evolution of U(1) symmetric scalar field at the inflation epoch with a pseudo Nambu-Goldstone tilt revealing after the end of exponential expansion of the Universe. The U(1) symmetry is supposed to be associated with baryon charge. It is shown that quantum fluctuations lead in natural way to baryon dominated Universe with antibaryon excess regions. The range of parameters is calculated at which the fraction of Universe occupied by antimatter and the size of antimatter regions… 

Figures and Tables from this paper

Origin of the matter-antimatter asymmetry
Although the origin of matter-antimatter asymmetry remains unknown, continuing advances in theory and improved experimental limits have ruled out some scenarios for baryogenesis, for example,
Analyses of Specific Aspects of the Evolution of Antimatter Glubular Clusters Domains
Abstract In the Affleck–Dine–Linde scenario of baryosynthesis, there exists a possibility of creation of sufficiently large regions with antibaryon excess, which can evolve in antimatter globular
Statistical analyses of antimatter domains, created by nonhomogeneous baryosynthesis in a baryon asymmetrical Universe
Within the framework of scenarios of nonhomogeneous baryosynthesis, the formation of macroscopic antimatter domains is predicted in a matter-antimatter asymmetrical Universe. The properties of
Effects of Baryon-Antibaryon Annihilation in the Evolution of Antimatter Domains in Baryon Asymmetrical Universe †
The mechanisms of baryosynthesis, which involve the three Sakharov’s conditions, admit a possibility of nonhomogeneous generation of baryon excess. It may take place in the case of spatial variation
Cosmological Probes for Supersymmetry
TLDR
The development of SUSY illustrates the main principles of cosmoparticle physics, as the physical basis of the modern cosmology provides cross-disciplinary tests in physical and astronomical studies.
Antimatter in cosmic rays
The current status of the antimatter problem is reviewed starting with theoretical developments over the last decades and then emphasizing the observational part. So far no antimatter was observed in
Big bang nucleosynthesis, matter-antimatter regions, extra relativistic species, and relic gravitational waves
Provided that matter-antimatter domains are present at the onset of big bang nucleosynthesis (BBN), the number of allowed additional relativistic species increases, compared to the standard scenario
Anihelium flux from antimatter globular cluster
Macroscopic cosmic antimatter objects are predicted in baryonasymmetrical Universe in the models of strongly nonhomogeneousbaryosynthesis. We test the hypothesis of the existence of an oldglobular
Researching of magnetic cutoff for local sources of charged particles in the halo of the Galaxy
Models of highly inhomogeneous baryosynthesis of the baryonic asymmetric Universe allow for the existence of macroscopic domains of antimatter, which could evolve in a globular cluster of antimatter
Anti-stars in the Milky Way and primordial black holes
. Astronomical data of the several recent years which present an evidence in favour of abundant antimatter population in our Galaxy, Milky Way, are analysed. The data include: registration of
...
...