Inflation from non-minimally coupled scalar field in loop quantum cosmology

被引:14
|
作者
Artymowski, Michat [1 ,2 ]
Dapor, Andrea [1 ]
Pawlowski, Tomasz [3 ,4 ]
机构
[1] Uniwersytet Warszawski, Inst Fizyki Teoretycznej, PL-00681 Warsaw, Poland
[2] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
[3] Univ Andres Bello, Fac Ciencias Exactas, Dept Ciencias Fis, Santiago, Chile
[4] Uniwersytet Warszawski, Katedra Metod Matemat Fizyki, PL-00682 Warsaw, Poland
关键词
inflation; quantum cosmology; modified gravity; particle physics - cosmology connection; BACKGROUND INDEPENDENT QUANTIZATIONS; BLACK-HOLE ENTROPY; EFFECTIVE EQUATIONS; STANDARD; MOTION; SPACE;
D O I
10.1088/1475-7516/2013/06/010
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The FRW model with non-minimally coupled massive scalar field has been investigated in LQC framework. Considered form of the potential and coupling allows applications to Higgs driven inflation. Out of two frames used in the literature to describe such systems: Jordan and Einstein frame, the latter one is applied. Specifically, we explore the idea of the Einstein frame being the natural 'environment' for quantization and the Jordan picture having an emergent nature. The resulting dynamics qualitatively modifies the standard bounce paradigm in LQC in two ways: (i) the bounce point is no longer marked by critical matter energy density, (ii) the Planck scale physics features the ''mexican hat'' trajectory with two consecutive bounces and rapid expansion and recollapse between them. Furthermore, for physically viable coupling strength and initial data the subsequent inflation exceeds 60 e-foldings.
引用
收藏
页数:23
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