Antimatter regions in the baryon-dominated Universe

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dc.creatorKhlopov, Maxim Yu.
dc.creatorRubin, Sergei G.
dc.creatorSakharov, Alexander S.
dc.date2002-10-01
dc.date.accessioned2026-07-07T03:48:07Z
dc.date.available2026-07-07T03:48:07Z
dc.descriptionQuantum fluctuations of a complex, baryonic charged scalar field caused by inflation can generate large domains, which convert later into antimatter regions. As a result the Universe can become globally matter-dominated, with minor contribution of antimatter regions. The distribution and evolution of such antimatter regions could cause every galaxy to be a harbour of an anti-star globular cluster. At the same time, the scenario does not lead to large-scale isocuvature perturbations, which would disturb observable CMB anisotropy. The existence of one of such antistar globular cluster in our Galaxy does not contradict the observed $γ$-ray background, but the expected fluxes of $\bar{\rm ^4He}$ and $\bar{\rm ^3He}$ from such an antimatter object are definitely accessible to the sensitivity of the coming AMS--02 experiment.
dc.descriptionTalk given at the XIVth Rencontres de Blois 2002 on Matter-Antimatter Asymmetry, Blois, France, June, 2002, to be published in the proceedings, ed. J. Tran Thanh Van, 4 latex pages, 2 eps figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0210012
dc.identifierhttp://arxiv.org/abs/hep-ph/0210012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/41882
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleAntimatter regions in the baryon-dominated Universe
dc.typetext

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