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arXiv 0902.3904hep-thastro-ph.COgr-qc
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向量场与暴胀

Vector Field and Inflation

Seoktae Koh

摘要:

我们已经研究了矢量场是否能在早期宇宙中产生加速相。我们考虑一个类时向量场与一般的二次动力学项,以保持一个各向同性的背景时空。需要矢量场势满足成功暴胀的三个最小条件:i)$ρ>0$,ii)$ρ+3P < 0$和iii)慢滚条件。作为一个例子,我们考虑了大量的矢量势和小场型势类似于标量驱动的暴胀。

英文摘要:

We have investigated if the vector field can give rise to an accelerating phase in the early universe. We consider a timelike vector field with a general quadratic kinetic term in order to preserve an isotropic background spacetime. The vector field potential is required to satisfy the three minimal conditions for successful inflation: i) $ρ>0$, ii) $ρ+3P < 0$ and iii) the slow-roll conditions. As an example, we consider the massive vector potential and small field type potential as like in scalar driven inflation.

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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