Limitations in using luminosity distance to determine the equation of state of the Universe

被引：189

作者：

Maor, I ^{[1
]}

Brustein, R

Steinhardt, PJ

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Princeton Univ, Dept Phys, Princeton, NJ 08540 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.86.6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Supernova searches have been been suggested as a method for determining precisely the current value and time variation of the equation of state, w, of the dark energy component responsible for the accelerated expansion of the Universe. We show that the method is fundamentally limited by the fact that luminosity distance depends on w through a multiple integral relation that smears out information about w and its time variation. The effect degrades the resolution of w that can be obtained from current data.

引用

页码：6 / 9

页数：4

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