Preheating-cosmic magnetic dynamo?

B. A. Bassett*, G. Pollifrone, S. Tsujikawa, F. Viniegra

*この研究の対応する著者

研究成果: Article査読

57 被引用数 (Scopus)

抄録

We study the amplification of large-scale magnetic fields during preheating and inflation in several different models. Preheating can resonantly amplify seed fields on cosmological scales. In the presence of conductivity, however, the effect of resonance is typically weakened and the amplitude of produced magnetic fields depends sensitively on the evolution of conductivity during the preheating and thermalization phases. In addition we discuss geometric magnetization, where amplification of magnetic fields occurs through coupling to curvature invariants. This can be efficient during inflation due to a negative coupling instability. Finally we discuss the breaking of the conformai flatness of the background metric whereby magnetic fields can be stimulated through the growth of scalar metric perturbations during metric preheating.

本文言語English
論文番号103515
ジャーナルPhysical Review D
63
10
DOI
出版ステータスPublished - 2001
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

フィンガープリント

「Preheating-cosmic magnetic dynamo?」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル