arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.4364astro-ph.COgr-qchep-ph
收藏

用CODEX探测$z=2$以外的暗能量

Probing dark energy beyond $z=2$ with CODEX

P. E. Vielzeuf, C. J. A. P. Martins

摘要:

精确测量自然界的基本耦合和宇宙学红移漂移的第一次测量是未来高分辨率超稳定光谱仪(如CODEX)的两个关键目标。能够做到这两点给了CODEX一个独特的优势,允许它探测物质时代深处的动态暗能量模型(通过测量它们的状态方程的行为),从而测试那些难以与标准$Λ$ CDM范式区分开的模型。我们用两个简单的案例来说明这一点。

英文摘要:

Precision measurements of nature's fundamental couplings and a first measurement of the cosmological redshift drift are two of the key targets for future high-resolution ultra-stable spectrographs such as CODEX. Being able to do both gives CODEX a unique advantage, allowing it to probe dynamical dark energy models (by measuring the behavior of their equation of state) deep in the matter era and thereby testing classes of models that would otherwise be difficult to distinguish from the standard $Λ$CDM paradigm. We illustrate this point with two simple case studies.

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。

↑