Volume 94, Number 6, June 2011
|Number of page(s)||6|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||20 May 2011|
Baryon asymmetry resulting from a quantum phase transition in the early universe
Petersburg Nuclear Physics Institute - Gatchina, 188300, Russia
2 Clark Atlanta University - Atlanta, GA 30314, USA
3 Racah Institute of Physics, Hebrew University - Jerusalem 91904, Israel
4 Komi Science Center, Ural Division, RAS - Syktyvkar, 167982, Russia
Accepted: 5 May 2011
A novel mechanism for explaining the matter-antimatter asymmetry of the universe is considered. We assume that the universe starts from completely symmetric state and then, as it cools down, it undergoes a quantum-phase transition which in turn causes an asymmetry between matter and antimatter. The mechanism does not require the baryon-number–violating interactions or CP violation at a microscopic level. Our analysis of the matter-antimatter asymmetry is in the context of conspicuous experimental results obtained in the condensed-matter physics.
PACS: 98.80.Bp – Origin and formation of the Universe / 64.60.fh – Studies of specific substances in the critical region / 64.70.Tg – Quantum phase transitions
© EPLA, 2011
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