Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-09-09
Phys.Lett. B573 (2003) 20-26
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 1 figure. To appear in Phys. Lett. B
Scientific paper
K-essence is a possible candidate for dark energy of the Universe. In this paper we consider couplings of k-essence to the matter fields of the standard electroweak theory and study the effects of the cosmological CPT violation induced by the CPT violating {\bf Ether} during the evolution of the k-essence scalar field on the laboratory experiments and baryogenesis. Our results show that the matter and antimatter asymmetry can be naturally explained {\it via} leptogenesis without conflicting with the experimental limits on CPT violation test. The mechanism for baryogenesis proposed in this paper provides a unified picture for dark energy and baryon matter of our Universe and allows an almost degenerate neutrino mass pattern with a predicted rate on the neutrinoless double beta decays accessible to the experimental sensitivity in the near future.
Li Mingzhe
Zhang Xinmin
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