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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2005
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| Online Access: | https://www.redalyc.org/articulo.oa?id=46435213 |
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Table of Contents:
- Dark energy in the universe, the irreversibility of time and neutrinos N. E. Mavromatos Física, Astronomía y Matemáticas In this review, I discuss briefly how the presence of a cosmological constant in the Universe may implya decoherent evolution of quantum matter in it, and as a consequence a fundamental irreversibility of timeunrelated in principle to CP properties (Cosmological CPT Violation). In this context, I also discuss recentlysuggested novel possible contributions of massive neutrinos to the cosmological constant, which are not dueto the standard loop expansion in quantum field theory, but rather due to unconventional properties of (someversion of) the quantum theory underlying flavour mixing. It is also argued that quantum space time foam maybe responsible for the neutrino mass differences, observed today, and through the above considerations, for the(majority of the) dark energy of the Universe in the present era. In the above context, I also present a fit of allthe currently available neutrino oscillation data, including the LSND anomalous experimental results, basedon such a CPT Violating decoherent neutrino model. The key feature is to use different decoherent parametersbetween neutrinos and antineutrinos, due to the above-mentioned CPT violation. This points to the necessity offuture experiments, concentrating on the antineutrino sector, in order to falsify the model. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435213 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.35