| 摘要: |
| 暴涨宇宙也可以通过暴涨场的动能项来实现,称为K-inflation暴涨模型.在暴涨时期,宇宙的能量非常高,引力的效应也比较大.根据广义相对论,引力是由时空的几何来描述的.笔者以时空测不准原理作为出发点,研究了在非对易时空中的K-inflation模型.结果表明,在该模型中,所有的扰动模式都产生在视界之内,并且时空的非对易效应以线性项的形式贡献到扰动的功率谱指数中.与实验观测比较之后,发现该模型能够比较好地符合最新的数据. |
| 关键词: 暴涨宇宙 K-inflation 测不准原理 张标比 |
| DOI： |
| 分类号: |
| 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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| Non-commutative K-inflation |
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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: |
| Inflation could be also driven by kinetic terms of the inflaton field,which is called the K-inflation model.During the inflation epoch,one could not neglect gravitational effect since the energy was so much high.According to general relativity,gravity is described by space-time geometry.By considering the space-time uncertainty,it is found that all the modes were created inside the Hubble horizon,and it contributes a linear term in the spectral index of the scalar and tensor power spectral. |
| Key words: inflation K-inflation uncertainty principle tensor-to-scalar ratio |
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