VECTOR FIELD AND INFLATION
VECTOR FIELD AND INFLATION
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矢量场和通货膨胀
DOI：
10.1142/s201019451100016x
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Seoktae Koh
中科院分区：
文献类型：
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作者：
Seoktae Koh
我们已经研究了矢量场是否会在早期宇宙中产生加速阶段。为了保持各向同性的背景时空，我们考虑了具有一般二次动力学项的类时矢量场。矢量场势需要满足三个成功膨胀的最小条件：i)ρ>；0，ii)ρ+3p<；0，以及iii)慢滚条件。作为一个例子，我们考虑了标量驱动的暴胀中的质量矢量势和小场类势。
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 a massive vector potential and a small-field type potential as in scalar driven inflation.