arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1311.7680gr-qc
收藏

暖各向异性暴胀宇宙模型

Warm Anisotropic Inflationary Universe Model

M. Sharif, Rabia Saleem

摘要:

本文在局部旋转对称Bianchi I型宇宙模型的背景下,利用向量场研究了热暴胀现象。我们制定的场方程,慢滚和扰动参数(标量和张量功率谱以及它们的谱指数)下慢滚近似。我们评估所有这些参数的定向哈勃参数在中间和logmediate暴胀制度的耗散因子作为标量场的函数,以及一个常数。在每种情况下,我们计算感兴趣的观测参数,即,张量-标量比。这些参数的图形行为表明,各向异性模型也是兼容的WMAP 7和普朗克观测数据。

英文摘要:

This paper is devoted to study the warm inflation using vector fields in the background of locally rotationally symmetric Bianchi type I universe model. We formulate the field equations, slow-roll and perturbation parameters (scalar and tensor power spectra as well as their spectral indices) under slow-roll approximation. We evaluate all these parameters in terms of directional Hubble parameter during intermediate and logamediate inflationary regimes by taking the dissipation factor as a function of scalar field as well as a constant. In each case, we calculate the observational parameter of interest, i.e., tensor-scalar ratio in terms of inflation. The graphical behavior of these parameters shows that the anisotropic model is also compatible with WMAP7 and Planck 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。

↑