Ja n 19 99 Ultra High Energy Cosmic Rays and Inflation . Igor
نویسنده
چکیده
Two processes of matter creation after inflation: 1) gravitational creation of superheavy (quasi)stable particles, and 2) non-thermal phase transitions leading to formation of topological defects, may be relevant to the resolution of the puzzle of cosmic rays observed with energies beyond GZK cut-off. Both possibilities are reviewed in this talk.
منابع مشابه
Ultra - High Energy Cosmic Rays , Superheavy Long - Living Particles , and Matter Creation after Inflation
The highest energy cosmic rays, above the Greisen–Zatsepin–Kuzmin cut-off of cosmic ray spectrum, may be produced in decays of superheavy long-living X-particles. We conjecture that these particles may be produced naturally in the early Universe from vacuum fluctuations during inflation and may constitute a considerable fraction of Cold Dark Matter. We predict a new cut-off in the UHE cosmic ra...
متن کاملar X iv : h ep - p h / 99 05 33 3 v 2 1 6 M ay 1 99 9 Ultra - High Energy Cosmic Rays and Stable H - dibaryon
It is shown that an instanton induced interaction between quarks produces a very deeply bound H-dibaryon with mass below 2M N , M H = 1718 MeV. Therefore the H-dibaryon is predicted to be a stable particle. The reaction of photodisintegration of H-dibaryon to 2Λ in during of its penetration into cosmic microwave background will result in a new possible cutoff in the cosmic-ray spectrum. This pr...
متن کاملar X iv : h ep - p h / 99 05 33 3 v 1 1 3 M ay 1 99 9 Ultra - High Energy Cosmic Rays and Stable H - dibaryon
It is shown that instanton induced interaction between quarks produces a very deeply bound H-dibaryon with mass below 2M N , M H = 1718 MeV. Therefore the H-dibaryon is predicted to be a stable particle. The reaction of photodisintegration of H-dibaryon to 2Λ in during of its penetration into cosmic microwave background will result in a new possible cutoff in the cosmic-ray spectrum. This provi...
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We conjecture that the highest energy cosmic rays, E > E GZK , where E GZK ∼ 5 · 10 19 eV is the Greisen–Zatsepin–Kuzmin cutoff energy of cosmic ray spectrum, may provide a unique window into the very early epoch of the Universe, namely, that of reheating after inflation, provided these cosmic rays are due to decays of parent superheavy long-living X-particles. These particles may constitute a ...
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The current status of origin of Ultra High Energy Cosmic Rays (UHECR) is reviewed, with emphasis given to elementary particle solutions to UHECR problem, namely to Topological Defects and Super-Heavy Dark Matter (SHDM) particles. The relic superheavy particles are very efficiently produced at inflation. Being protected by gauge discrete symmetries, they can be long lived. They are clustering in...
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