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無窮級數(shù)單標量場暴漲宇宙模型與原初引力波

2014-04-29 00:00:00馮朝君李新洲

摘 要: 通過對宇宙微波背景輻射光子極化的觀測,可以精確測量張標比.在對暴漲宇宙模型進行限制的時候,它將提供一個非常有力的工具.就一個單標量場暴漲模型而言,要同時預(yù)言比較大的張標比和譜指數(shù)跑動是有困難的.為了試圖解決這一問題,本文作者提出了一種具有冪級數(shù)形式勢能的單暴漲場模型.研究表明,這個具有無窮多項勢能的暴漲模型不僅理論上是自洽的,而且能夠緩解上述問題.

關(guān)鍵詞: 張標比; 譜指數(shù); 譜指數(shù)跑動; 冪級數(shù); 暴漲宇宙

中圖分類號: O 412.1 文獻標識碼: A 文章編號: 1000-5137(2014)04-0391-08

參考文獻:

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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

(責任編輯:顧浩然)

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