Resonant particle production with nonminimally coupled scalar fields in preheating after inflation

Shinji Tsujikawa, Kei Ichi Maeda, Takashi Torii

研究成果: Article

80 引用 (Scopus)

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We investigate the resonant particle production of a scalar field χ coupled nonminimally to a spacetime curvature R (ξRχ2) as well as to an inflaton field φ(g2φ2χ2). In the case of g≲3×10-4, the ξ effect assists g resonance in certain parameter regimes. However, for g≳3×10-4, g resonance is not enhanced by the ξ effect because of the ξ suppression effect as well as a back reaction effect. If ξ≈-4, the maximal fluctuation of produced χ particles is √〈χ2max≈2×1017 GeV for g≲1×10-5, which is larger than the minimally coupled case with g≈1×10-3.

元の言語English
ページ(範囲)1-19
ページ数19
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
60
発行部数6
出版物ステータスPublished - 1999 9 15

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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