Gravitational waves from primordial magnetic fields via photon-graviton conversion

Tomohiro Fujita, Kohei Kamada, Yuichiro Nakai

研究成果査読

6 被引用数 (Scopus)

抄録

We explore a novel process in the early Universe in which thermalized photons are converted into gravitons in the presence of strong primordial magnetic fields. It is found that the frequency of generated gravitational waves (GWs) is typically of the order of GHz, and their amplitude can be up to ωGWh2∼10-10. If detected with future developments of the technology to explore this frequency region, the produced stochastic GW background enables us to know when and how strong the primordial magnetic fields are generated. From the peak frequency of the GWs, we can also probe the number of relativistic degrees of freedom at that time.

本文言語English
論文番号103501
ジャーナルPhysical Review D
102
10
DOI
出版ステータスPublished - 2020 11 2
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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