论文标题
n = 2 pngb典型的暗能量
N=2 PNGB Quintessence Dark Energy
论文作者
论文摘要
在本文中，我们表明，自发对称性破坏（SSB）的伪 - nambu-goldstone玻色子（PNGB）的典型是造成了晚期宇宙加速的时代。我们建议使用SSB的n = 2 PNGB典型性会导致宇宙进化中的快速滚动宇宙加速度。在n = 2 PNGB典型模型中，该模型的速度质量平方$ | m_q^2 | $的绝对值远小于哈勃常数$ h^2 $的平方，分解为快速滚动条件，$ | m_q^2 | = o（h^2）$。但是，结果表明，与SSB的N = 2 PNGB少量相关的快速滚动可以导致晚期宇宙加速度的时代。的确，在我们的PNGB模型中，这个时期可能会很长，因为n = 2 pngb Quintessence字段的质量非常小，为$ M_Q \ of $ m_q \ of 10^{ - 33} \ rm {ev} $。
In this paper we show that a pseudo-Nambu-Goldstone boson (PNGB) quintessence of spontaneous symmetry breaking (SSB) is responsible for an epoch of the late time cosmic acceleration. We suggest that an N=2 PNGB quintessence with SSB can give rise to the fast-roll cosmic acceleration in evolution of the Universe. In the N=2 PNGB quintessence model, the standard slow-roll condition in which the absolute value of the tachyonic mass squared $|m_q^2|$ of this model is much less than the square of the Hubble constant $H^2$, is broken down to the fast-roll condition, $|m_q^2|=O(H^2)$. However, it is shown that the fast-rolling associated with the N=2 PNGB quintessence of SSB can be led to the epoch of the late time cosmic acceleration. Indeed, in our PNGB model, this epoch can be quite long lasting since the mass of the N=2 PNGB quintessence field is extremely small as $m_q \approx 10^{-33} \rm{eV}$.
