Crossing the phantom divide with k-essence in braneworlds
We study a flat three-brane in the presence of a linear k field with nonzero cosmological constant Λ 4 . In this model the crossing of the phantom divide (PD) occurs when the k-essence energy density becomes negative. We show that in the high energy regime the effective equation of state has a resem...
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| Autores principales: | Chimento, L.P., Forte, M., Richarte, M.G. |
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| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02177323_v25_n29_p2469_Chimento |
| Aporte de: |
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