Primordial perturbations of test scalar fields

2006/08/31 by Yun-Song Piao, Yuan‐Zhong Zhang, Yuan-Zhong Zhang
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Solar and Space Plasma Dynamics #gr-qc

paper · pdf · doi:10.1103/physrevd.75.027301

published as Phys.Rev.D75:027301,2007 · 4 pages, no figures, clarifications and refs. added, typos corrected, to publish in PRD

arxiv created 2006/11/30 · openalex publication_date 2007/01/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The primordial perturbations of test scalar fields not affecting the evolution of background may be very interesting since they can be transferred to the curvature perturbations by some mechanisms, and thus under certain condition can be responsible for the structure formation of observable universe. In this brief report we study the primordial perturbations of test scalar fields in various (super)accelerated expanding backgrounds.

Citations

• Is the island universe model consistent with observations?
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• The pre-big bang scenario in string cosmology