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arXiv 1407.2156astro-ph.CO
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辅助耦合精华

Assisted coupled quintessence

Luca Amendola, Tiago Barreiro, Nelson J. Nunes

摘要:

我们研究模型的精髓组成的一些标量场耦合到几个暗物质组件。在指数势的情况下,标度解可以用单个场来描述。相应的有效对数斜率和有效耦合可以根据原始场的各个斜率和耦合以简单的形式写出。我们还调查解决方案的标量势可以忽略不计,特别是那些导致瞬态物质占主导地位的解决方案。最后,我们计算的线性扰动,这将使这些模型进行测试,对当前和未来的观测数据的演化方程。

英文摘要:

We study models of quintessence consisting of a number of scalar fields coupled to several dark matter components. In the case of exponential potentials the scaling solutions can be described in terms of a single field. The corresponding effective logarithmic slope and effective coupling can be written in a simple form in terms of the individual slopes and couplings of the original fields. We also investigate solutions where the scalar potential is negligible, in particular those leading to transient matter dominated solutions. Finally, we compute the evolution equations for the linear perturbations which will allow these models to be tested against current and future observational data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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