arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.4206hep-thastro-ph.COgr-qchep-ph
收藏

背景超引力中的膜膨胀

Brane inflation in background supergravity

Sayantan Choudhury, Supratik Pal

摘要:

我们在膜宇宙学的框架内提出了一个背景超引力驱动的暴胀模型。从体超引力出发,我们构造了膜上的暴胀子势,并利用它来研究暴胀范式的后果。为此,我们利用单圈辐射修正势,导出了膜暴胀中与标准宇宙学中的相应参数略有不同的重要参数的表达式。我们进一步估计了可观测参数,并发现它们与最近的观测数据很好地拟合,通过面对WMAP 7使用CAMB。我们还分析了膜暴胀的典型能量标度,这与目前宇宙学和粒子物理学标准模型的估计是一致的。

英文摘要:

We propose a model of inflation in the framework of brane cosmology driven by background supergravity. Starting from bulk supergravity we construct the inflaton potential on the brane and employ it to investigate for the consequences to inflationary paradigm. To this end, we derive the expressions for the important parameters in brane inflation, which are somewhat different from their counterparts in standard cosmology, using the one loop radiative corrected potential. We further estimate the observable parameters and find them to fit well with recent observational data by confronting with WMAP7 using CAMB. We also analyze the typical energy scale of brane inflation with our model, which resonates well with present estimates from cosmology and standard model of particle physics.

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。

↑