| Автор | Carlos F Sopuertasica |
| Дата выпуска | 1998-04-01 |
| dc.description | Some years ago, it was conjectured that general relativistic shear-free perfect fluids, with a barotropic equation of state such that , must be either expansion-free or irrotational. In this paper we present a fully covariant approach to this conjecture by using the so-called hydrodynamical formalism. We discuss the role of the variables and equations and the procedure for using them in a profitable way. We illustrate the method by giving the proof of the conjecture in two particular cases: (i) when the expansion and the energy density are functionally dependent, i.e. the case studied previously by Lang and Collins using the tetrad formalism; and (ii) when the expansion and the rotation scalar are functionally dependent, a case not treated hitherto. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Covariant study of a conjecture on shear-free barotropic perfect fluids |
| Тип | paper |
| DOI | 10.1088/0264-9381/15/4/024 |
| Electronic ISSN | 1361-6382 |
| Print ISSN | 0264-9381 |
| Журнал | Classical and Quantum Gravity |
| Том | 15 |
| Первая страница | 1043 |
| Последняя страница | 1062 |
| Аффилиация | Carlos F Sopuertasica; Departament de Física Fonamental, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain |
| Выпуск | 4 |
