Pre-inflation and trans-Planckian censorship

被引：25

作者：

Cai, Yong ^{[1
]}

Piao, YunSong ^{[1
,2
]}

机构：

[1] Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2020年 / 63卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

inflation; primordial perturbation; trans-Planckian censorship conjecture; FLATNESS; UNIVERSE; HORIZON; MODELS;

D O I：

10.1007/s11433-020-1573-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the implication of trans-Planckian censorship conjecture (TCC) for the initial state of primordial perturbations. It is possible to set the state of perturbation modes in the infinite past as the Minkowski vacuum, only if the pre-inflationary era is past-complete. We calculate the evolution of the perturbation modes in such a pre-inflationary era and show that at the beginning of inflation the perturbation modes with wavelengths much shorter than the Hubble scale (but still larger than the Planck length scale) will behave as they are in the Bunch-Davis state. Therefore, a past-complete pre-inflationary evolution may automatically prepare the initial state required for the inflationary perturbations at the CMB window while obeying the TCC.

引用

页数：9

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