Phantom damping of matter perturbations

Luca Amendola, Shinji Tsujikawa*, M. Sami

*この研究の対応する著者

研究成果: Article査読

96 被引用数 (Scopus)

抄録

Cosmological scaling solutions are particularly important in solving the coincidence problem of dark energy. We derive the equations of sub-Hubble linear matter perturbations for a general scalar-field Lagrangian - including quintessence, tachyon, dilatonic ghost condensate and k-essence - and solve them analytically for scaling solutions. We find that matter perturbations are always damped if a phantom field is coupled to dark matter and identify the cases in which the gravitational potential is constant. This provides an interesting possibility to place stringent observational constraints on scaling dark energy models.

本文言語English
ページ(範囲)155-158
ページ数4
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
632
2-3
DOI
出版ステータスPublished - 2006 1 12
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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