Cosmological imprint of an energy component with general equation of state

被引：3156

作者：

Caldwell, RR ^{[1
]}

Dave, R ^{[1
]}

Steinhardt, PJ ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.80.1582

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine the possibility that a significant component of the energy density of the Universe has an equation of state different from that of matter, radiation, or cosmological constant (Lambda). An example is a cosmic scalar field evolving in a potential, but our treatment is more general. Including this component alters cosmic evolution in a way that fits current observations well. Unlike Lambda, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.

引用

页码：1582 / 1585

页数：4

共 25 条

[11] HU W, 1996, P ADV SUMM SCH UN HI
[12] COSMOLOGICAL PERTURBATION-THEORY IN THE SYNCHRONOUS AND CONFORMAL NEWTONIAN GAUGES
MA, CP
BERTSCHINGER, E
[J]. ASTROPHYSICAL JOURNAL, 1995, 455 (01) : 7 - 25
[13] THE OBSERVATIONAL CASE FOR A LOW-DENSITY UNIVERSE WITH A NONZERO COSMOLOGICAL CONSTANT
OSTRIKER, JP
STEINHARDT, PJ
[J]. NATURE, 1995, 377 (6550) : 600 - 602
[14] COSMOLOGICAL CONSEQUENCES OF A ROLLING HOMOGENEOUS SCALAR FIELD
RATRA, B
PEEBLES, PJE
[J]. PHYSICAL REVIEW D, 1988, 37 (12): : 3406 - 3427
[15] SELJAK U, ASTROPH9603033
[16] Cosmological properties of a class of Lambda decaying cosmologies
Silveira, V
Waga, I
[J]. PHYSICAL REVIEW D, 1997, 56 (08): : 4625 - 4632
[17] SPERGEL D, 1997, ASTROPHYS J, V491, P67
[18] Missing energy and cosmic expansion
Steinhardt, PJ
[J]. NATURE, 1996, 382 (6594) : 768 - 768
[19] COSMOLOGY CONFRONTS THE COSMIC MICROWAVE BACKGROUND
STEINHARDT, PJ
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 1995, 10 (08): : 1091 - 1124
[20] STEINHARDT PJ, 1997, CRITICAL DIALOGUES C

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