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arXiv 0810.3625hep-phastro-ph
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GUT后的膨胀和质子衰变

GUT Inflation and Proton Decay after WMAP5

Mansoor Ur Rehman, Qaisar Shafi, Joshua R. Wickman

摘要:

我们使用Coleman-Weinberg势和Higgs势来实现非超对称大统一理论(GUT)中的暴胀,如SU(5)和SO(10)。为了实现接近0.96的标量谱指数,如最新的WMAP 5年分析所示,可观测到的暴胀的能量尺度是$10^{16}$ GeV。这意味着一个类似量级的大统一体对称性破缺尺度,以及$10^{34}$ - $10^{38}$年量级的质子寿命。在某些含有轴子暗物质的SO(10)模型中,标量轻夸克玻色子交换导致质子衰变,寿命为$10^{34}$ - $10^{35}$年.

英文摘要:

We employ Coleman-Weinberg and Higgs potentials to implement inflation in non-supersymmetric grand unified theories (GUTs) such as SU(5) and SO(10). To realize a scalar spectral index close to 0.96, as indicated by the most recent WMAP 5-year anlaysis, the energy scale of observable inflation turns out to be of order $10^{16}$ GeV. This implies a GUT symmetry breaking scale of similar magnitude, and proton lifetime of order $10^{34}$-$10^{38}$ years. In some SO(10) models with axion dark matter, the scalar leptoquark boson exchange leads to proton decay with a lifetime of order $10^{34}$-$10^{35}$ years.

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