Hybrid loop quantum cosmology and predictions for the cosmic microwave background

被引：56

作者：

Castello Gomar, Laura ^{[1
]}

Mena Marugan, Guillermo A. ^{[1
]}

Martin de Blas, Daniel ^{[1
,2
]}

Olmedo, Javier ^{[3
,4
,5
]}

机构：

[1] CSIC, Inst Estruct Mat, Serrano 121, Madrid 28006, Spain

[2] Pontificia Univ Catolica Chile, Fac Fis, Inst Fis, Ave Vicuna Mackenna 4860, Santiago, Chile

[3] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[4] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[5] Penn State Univ, Phys Dept, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW D | 2017年 / 96卷 / 10期

关键词：

ADIABATIC REGULARIZATION; INFLATION; FIELD;

D O I：

10.1103/PhysRevD.96.103528

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the consequences of the hybrid quantization approach for primordial perturbations in loop quantum cosmology, obtaining predictions for the cosmic microwave background and comparing them with data collected by the Planck mission. In this work, we complete previous studies about the scalar perturbations and incorporate tensor modes. We compute their power spectrum for a variety of vacuum states. We then analyze the tensor-to-scalar ratio and the consistency relation between this quantity and the spectral index of the tensor power spectrum. We also compute the temperature-temperature, electric-electric,temperature-electric, and magnetic-magnetic correlation functions. Finally, we discuss the effects of the quantum geometry in these correlation functions and confront them with observations.

引用

页数：24

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