Exact scalar field cosmologies in (1+1) dimensions
We report a series of exact cosmological solutions of the gravitational (1+1)-dimensional equations with a classical scalar field and an isotropic perfect fluid source. We consider a Robertson - Walker universe and obtain the scale factor and the field for several physically interesting potentials....
| Autores principales: | , |
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| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02649381_v11_n5_p1177_Chimento |
| Aporte de: |
| Sumario: | We report a series of exact cosmological solutions of the gravitational (1+1)-dimensional equations with a classical scalar field and an isotropic perfect fluid source. We consider a Robertson - Walker universe and obtain the scale factor and the field for several physically interesting potentials. In the case of a non-vanishing positive cosmological constant , we have found asymptotically de Sitter solutions which resemble the (3+1)-dimensional results. When we have to take restrictive conditions on the sign of the potential function in order to obtain exactly solvable models which include exponential inflationary processes. |
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