Acoustics of early universe - Lifshitz versus gauge-invariant theories

被引：6

作者：

Golda, ZA ^{[1
]}

Woszczyna, A ^{[1
]}

机构：

[1] Jagiellonian Univ, Astron Observ, PL-30244 Krakow, Poland

来源：

JOURNAL OF MATHEMATICAL PHYSICS | 2001年 / 42卷 / 02期

关键词：

D O I：

10.1063/1.1335557

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Appealing to classical methods of order reduction, we reduce the Lifshitz system to a second order differential equation. We demonstrate its equivalence to well known gauge-invariant results. For a radiation dominated universe we express the metric and density corrections in their exact forms and discuss their acoustic character. (C) 2001 American Institute of Physics.

引用

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页码：856 / 862

页数：7

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