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arXiv 0908.3896hep-phastro-ph.CO
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超对称混合暴胀

Supersymmetric Hybrid Inflation Redux

Mansoor Ur Rehman, Qaisar Shafi, Joshua R. Wickman

摘要:

讨论了超对称混合暴胀模型的暴胀势中的软超对称破缺项在暴胀过程中所起的重要作用。在Kaehler势最小的情况下,加入这一项后,标量谱指数的计算结果与WMAP 5的结果n_s = 0.963^{+0.014}_{-0.015}一致。在没有这个软项的情况下,只考虑辐射和超重力修正,我们知道n_s >= 0.985。这同一个软长期先前已被证明在解决MSSM mu问题中发挥关键作用。在这些模型中,张量与标量之比r非常小,在WMAP 5 2-sigma范围内n_s取r <= 10^{-5}。

英文摘要:

We discuss the important role played during inflation by one of the soft supersymmetry breaking terms in the inflationary potential of supersymmetric hybrid inflation models. With minimal Kaehler potential, the inclusion of this term allows the prediction for the scalar spectral index to agree with the value n_s = 0.963^{+0.014}_{-0.015} found by WMAP5. In the absence of this soft term, and by taking into account only radiative and supergravity corrections, it is well known that n_s >= 0.985. This same soft term has previously been shown to play a key role in resolving the MSSM mu problem. The tensor to scalar ratio r is quite small in these models, taking on values r <= 10^{-5} in the WMAP5 2-sigma range of n_s.

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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