Primordial tensor non-gaussianity from massive gravity

Tomohiro Fujita, Shuntaro Mizuno, Shinji Mukohyama

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We calculate tensor bispectrum in a theory of massive tensor gravitons which predicts blue-tilted and largely amplified primordial gravitational waves. We find that a new 3-point interaction can produce a larger tensor bispectrum than the conventional one from general relativity. The bispectrum peaks at the squeezed configuration and its slope towards the squeezed limit is determined by the graviton mass. This squeezed tensor bispectrum may be observed as the quadrupolar modulation of the tensor power spectrum by interferometers.

本文言語English
論文番号023
ジャーナルJournal of Cosmology and Astroparticle Physics
2020
1
DOI
出版ステータスPublished - 2020 1 8
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学

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