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arXiv 1001.3733hep-ph
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无标度超重力中膨胀后的再热温度

Reheating Temperature after Inflation in No-Scale Supergravity

Yuta Koshimizu, Toyokazu Fukuoka, Kenji Takagi, Hikoya Kasari, Mitsuo J. Hayashi

摘要:

利用一个能较好地解释WMAP观测的无标度超引力模型,研究了暴胀结束后的预热机制。利用正则化和对角化标量,通过$S$暴胀到扇形规范场,计算了这些场的衰变率。利用玻尔兹曼方程的稳定性条件和瞬时预热机制,对再加热温度进行了估算。两者的再加热温度几乎是相同的数量级$\sim O(10^{10})$ GeV。由于两种机制是完全独立的过程,前者是由暴胀子衰变为规范场和规范子引起的,后者是由两个暴胀子散射为两个右手中微子引起的,右手中微子又衰变为Higgs场和其他最小超对称标准模型粒子,我们认为这两种机制在暴胀后的预热过程中都起着重要的作用.

英文摘要:

By using a No-Scale Supergravity model, which was proved well to explain WMAP observations appropriately, a mechanism of preheating just after the end of inflation is investigated. By using the canonically normalized and diagonalized scalars, the decay rates of these fields are calculated inflaton $S$ into gauge sector fields. The reheating temperature is estimated by both the stability condition of Boltzmann equation and the instant preheating mechanism. The both of reheating temperatures are almost the same order of magnitude $\sim O(10^{10})$ GeV. Because two mechanisms are completely independent processes, the former is caused through the inflaton decays into gauge fields and gauginons and the latter is caused by the scattering process of two inflatons into two right handed sneutrinos, which will decay into Higgs fields and other minimal SUSY standard model (MSSM) particles, we conclude that both mechanisms play essential roles in the preheating process after inflation.

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