Loop quantum gravity effects on inflation and the CMB

Shinji Tsujikawa*, Parampreet Singh, Roy Maartens

*この研究の対応する著者

研究成果: Article査読

99 被引用数 (Scopus)

抄録

In loop quantum cosmology, the universe avoids a big bang singularity and undergoes an early and short super-inflation phase. During super-inflation, non-perturbative quantum corrections to the dynamics drive an inflaton field up its potential hill, thus setting the initial conditions for standard inflation. We show that this effect can raise the inflaton high enough to achieve sufficient e-foldings in the standard inflation era. We analyse the cosmological perturbations generated when slow-roll is violated after super-inflation and show that loop quantum effects can in principle leave an indirect signature on the largest scales in the CMB, with some loss of power and running of the spectral index.

本文言語English
ページ(範囲)5767-5775
ページ数9
ジャーナルClassical and Quantum Gravity
21
24
DOI
出版ステータスPublished - 2004 12月 21
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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