Superhorizon perturbations and preheating

被引：0

作者：

Malik, KA ^{[1
]}

Wands, D ^{[1
]}

Lyth, DH ^{[1
]}

Liddle, AR ^{[1
]}

机构：

[1] Univ Portsmouth, Sch Comp Sci & Math, Portsmouth PO1 2EG, Hants, England

来源：

COSMOLOGY AND PARTICLE PHYSICS | 2001年 / 555卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the evolution of linear perturbations about a Friedmann-Robertson-Walker background metric, using only the local conservation of energy-momentum. We show that on sufficiently large scales the curvature perturbation on spatial hypersurfaces of uniform-density is constant when the non-adiabatic pressure perturbation is negligible. We clarify the conditions under which super-horizon curvature perturbations may vary, using preheating as an example.

引用

页码：289 / 292

页数：4

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