| 摘要: |
| 通过对宇宙微波背景辐射光子极化的观测,可以精确测量张标比.在对暴涨宇宙模型进行限制的时候,它将提供一个非常有力的工具.就一个单标量场暴涨模型而言,要同时预言比较大的张标比和谱指数跑动是有困难的.为了试图解决这一问题,本文作者提出了一种具有幂级数形式势能的单暴涨场模型.研究表明,这个具有无穷多项势能的暴涨模型不仅理论上是自洽的,而且能够缓解上述问题. |
| 关键词: 张标比 谱指数 谱指数跑动 幂级数 暴涨宇宙 |
| DOI： |
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| 基金项目:国家自然科学基金(11047138); 上海市晨光计划(12CG51); 国家教育基金(2009312711004); 上海市自然科学基金(10ZR1422000) |
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| Power series inflation and primordial gravitational waves |
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FENG Chaojun, LI Xinzhou
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Shanghai United Center for Astrophysics(SUCA),Shanghai Normal University
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| Abstract: |
| The tensor-to-scalar ratio can be measured by observing the polarization of photos in the cosmic microwave background.It shows very strong power on constraining inflation models.However,for a single field inflation model,it can not predict both a large tensor-to-scalar ratio and a large running of the scalar power spectral index.To solve this problem,the authors propose an inflation model with power series potential.It is found that this model is consistent with latest observations. |
| Key words: tensor-to-scalar ratio spectral index running of spectral index power series inflation |
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