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arXiv 1204.2298astro-ph.COgr-qc
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暗区统一的标量模型

Scalar models for the unification of the dark sector

Mahamadou H. Daouda, Julio C. Fabris, Oliver F. Piattella

摘要:

我们回顾的困难,广义Chaubergin气体模型,以适应观测数据,由于背景和微扰测试之间的紧张关系。我们认为,这样的问题可以绕过一个自相互作用的标量场表示的模型。然而,这个建议似乎是成功的,只有当自相互作用的标量场有一个非规范的形式。后者可以在拉斯塔尔的引力理论中实现。

英文摘要:

We review the difficulties of the generalized Chaplygin gas model to fit observational data, due to the tension between background and perturbative tests. We argue that such issues may be circumvented by means of a self-interacting scalar field representation of the model. However, this proposal seems to be successful only if the self-interacting scalar field has a non-canonical form. The latter can be implemented in Rastall's theory of gravity.

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