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Article overview
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O(N) quintessence | Xin-zhou Li
; Jian-gang Hao
; Dao-jun Liu
; | Date: |
10 Jul 2001 | Journal: | Class.Quant.Grav. 19 (2002) 6049-6058 | Subject: | astro-ph gr-qc | Abstract: | We study a new class of quintessence models, in which the scalar field possesses a O( extit{N}) internal symmetry. We give a critical condition of instability for the potential against Q ball formation. We find that the most widely used potentials of quintessence don’t satisfy the above condition, and therefore the O( extit{N}) quintessence with these potential will not lead to the Q ball formation. It is worth noting that O( extit{N}) quintessence with cosine-type potential is especially interesting in that the angular contribution is not negligible. | Source: | arXiv, astro-ph/0107171 | Services: | Forum | Review | PDF | Favorites |
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