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arXiv 0802.4354hep-phastro-phgr-qchep-th
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暖山顶通货膨胀

Warm hilltop inflation

Juan Carlos Bueno Sanchez, Mar Bastero-Gil, Arjun Berera, Konstantinos Dimopoulos

摘要:

研究了山顶模型中暖膨胀的低温极限。这个极限直到暴胀结束时都是有效的,从而可以对整个暴胀阶段进行分析描述。在弱耗散区,如果暴胀子的动力学密度在暴胀后占主导地位,则在低至1 GeV的哈勃尺度下实现低尺度暴胀。在强耗散制度,该模型满足观测要求的光谱指数与温和的调整模型参数,同时也克服了$η$ -问题的通货膨胀。然而,除非理论中的粒子含量很大,否则存在着引力子过度产生的危险。

英文摘要:

We study the low-temperature limit of warm inflation in a hilltop model. This limit remains valid up to the end of inflation, allowing an analytic description of the entire inflationary stage. In the weak dissipative regime, if the kinetic density of the inflaton dominates after inflation, low scale inflation is attained with Hubble scale as low as 1 GeV. In the strong dissipative regime, the model satisfies the observational requirements for the spectral index with a mild tuning of the model parameters, while also overcoming the $η$-problem of inflation. However, there is some danger of gravitino overproduction unless the particle content of the theory is large.

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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