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arXiv 0710.0366astro-phgr-qchep-th
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非最小耦合体模宇宙学中的耦合常数约束

Coupling constant constraints in a nonminimally coupled phantom cosmology

Marek Szydlowski, Orest Hrycyna, Aleksandra Kurek

摘要:

在本文中,我们调查的观测约束耦合到重力常数参数$ξ$使用遥远的超新星SNIa数据,重子振荡峰(BOP),宇宙微波背景辐射(CMBR)的移动参数,和$H(z)$数据集。我们估计了这个参数的值,以约束非最小耦合到重力幻影标量场的扩展的quintessence模型。观测数据的综合分析有利于$ξ$的值,它位于共形耦合的附近。虽然我们的估计取决于模型,但它们会对等效原则产生间接约束。

英文摘要:

In the paper we investigate observational constraints on coupling to gravity constant parameter $ξ$ using distant supernovae SNIa data, baryon oscillation peak (BOP), the cosmic microwave background radiation (CMBR) shift parameter, and $H(z)$ data set. We estimate the value of this parameter to constrain the extended quintessence models with nonminimally coupled to gravity phantom scalar field. The combined analysis of observational data favors a value of $ξ$ which lies in close neighborhood of the conformal coupling. While our estimations are model dependent they give rise to a indirect bound on the Equivalence Principle.

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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