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arXiv 0908.2362astro-ph.COgr-qchep-th
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幻影精粹宇宙学中的Noether对称性方法

Noether symmetry approach in phantom quintessence cosmology

S. Capozziello, E. Piedipalumbo, C. Rubano, P. Scudellaro

摘要:

在幻影精粹宇宙学的框架下,我们利用Noether对称性方法得到了宇宙学方程的一般精确解。这个结果是由对称性本身的存在所决定的典型(幻影)势实现的。理论模型和观测结果进行了比较。特别是,我们使用Ia型超新星和大尺度结构参数确定的2度场星系红移调查(2dFGRS)和从宽的VIMOS-VLT深调查(VVDS)的一部分。事实证明,该模型与目前可用的观测数据是兼容的。此外,我们扩展的方法,包括辐射。我们表明,它是兼容的数据来自重组,它似乎不影响nucleosynthesis结果的精髓。

英文摘要:

In the framework of phantom quintessence cosmology, we use the Noether Symmetry Approach to obtain general exact solutions for the cosmological equations. This result is achieved by the quintessential (phantom) potential determined by the existence of the symmetry itself. A comparison between the theoretical model and observations is worked out. In particular, we use type Ia supernovae and large scale structure parameters determined from the 2-degree Field Galaxy Redshift Survey (2dFGRS)and from the Wide part of the VIMOS-VLT Deep Survey (VVDS). It turns out that the model is compatible with the presently available observational data. Moreover we extend the approach to include radiation. We show that it is compatible with data derived from recombination and it seems that quintessence do not affect nucleosynthesis results.

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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