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arXiv 1402.0205gr-qc
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非正则标量场的温暴胀推广

Extension of warm inflation to noncanonical scalar fields

Xiao-Min Zhang, Jian-Yang Zhu

摘要:

我们将暖暴胀情形推广到非正则标量场的情形。得到了该方案的运动方程等基本方程。哈勃阻尼项在非正则暴胀中得到增强。通过线性稳定性分析,给出了热非正则暴胀中慢滚的适当条件。我们研究了新图像中的密度涨落,得到了功率谱的近似解析表达式。非正则效应和热效应都降低了视界交叉处的能量标度,从而降低了张量标量比。在非正则暖暴胀中,除了协同作用外,非正则效应和热效应也相互竞争。

英文摘要:

We extend the warm inflationary scenario to the case of the noncanonical scalar fields. The equation of motion and the other basic equations of this new scenario are obtained. The Hubble damped term is enhanced in noncanonical inflation. A linear stability analysis is performed to give the proper slow-roll conditions in warm noncanonical inflation. We study the density fluctuations in the new picture and obtain an approximate analytic expression of the power spectrum. The energy scale at the horizon crossing is depressed by both noncanonical effect and thermal effect, and so is the tensor-to-scalar ratio. Besides the synergy, the noncanonical effect and the thermal effect are competing in the case of the warm noncanonical inflation.

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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