| Автор | Ryo Takahashi |
| Автор | Morimitsu Tanimoto |
| Дата выпуска | 2006-05-01 |
| dc.description | We discuss about the speed of sound squared in the Mass Varying Neutrinos scenario (MaVaNs). Recently, it was argued that the MaVaNs has a catastrophic instability which is the emergence of an imaginary speed of sound at the non-relativistic limit of neutrinos. As the result of this instability, the neutrino-acceleron fluid cannot act as the dark energy. However, it is found that the speed of sound squared in the neutrino-acceleron fluid could be positive in our model. We examine the speed of sound in two cases of the scalar potential. One is the small fractional power-law potential and another is the logarithmic one. The power-law potential model with the right-handed neutrinos gives a stable one. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Speed of sound in the mass varying neutrinos scenario |
| Тип | paper |
| DOI | 10.1088/1126-6708/2006/05/021 |
| Electronic ISSN | 1029- 8479 |
| Print ISSN | 1126-6708 |
| Журнал | Journal of High Energy Physics |
| Том | 2006 |
| Первая страница | 21 |
| Последняя страница | 021 |
| Выпуск | 05 |
