A constant equation of state for quintessence?

被引:14
作者
Di Pietro, E [1 ]
Demaret, J [1 ]
机构
[1] Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2001年 / 10卷 / 02期
关键词
D O I
10.1142/S0218271801000779
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Quintessence is often invoked to explain the universe's acceleration suggested by type Ia supernovae observations. The aim of this letter is to study the validity of using a constant equation of state for quintessence models. We shall show that this hypothesis strongly constraint the form of the scalar potential.
引用
收藏
页码:231 / 237
页数:7
相关论文
共 20 条
[11]   Electrically charged sphalerons [J].
Saffin, PM ;
Copeland, EJ .
PHYSICAL REVIEW D, 1998, 57 (08) :5064-5069
[12]  
SAHN V, 1999, ASTROPH9904398
[13]   Reconstructing the cosmic equation of state from supernova distances [J].
Saini, TD ;
Raychaudhury, S ;
Sahni, V ;
Starobinsky, AA .
PHYSICAL REVIEW LETTERS, 2000, 85 (06) :1162-1165
[14]  
Starobinsky A. A., 1998, GRAV COSMOL, V4, P88
[15]   How to determine an effective potential for a variable cosmological term [J].
Starobinsky, AA .
JETP LETTERS, 1998, 68 (10) :757-763
[16]   CDM models with a smooth component [J].
Turner, MS ;
White, M .
PHYSICAL REVIEW D, 1997, 56 (08) :R4439-R4443
[17]   FLATNESS OF THE UNIVERSE - RECONCILING THEORETICAL PREJUDICES WITH OBSERVATIONAL DATA [J].
TURNER, MS ;
STEIGMAN, G ;
KRAUSS, LM .
PHYSICAL REVIEW LETTERS, 1984, 52 (23) :2090-2093
[18]  
URENOLOPEZ LA, ASTROPH0003364
[19]   THE COSMOLOGICAL CONSTANT PROBLEM [J].
WEINBERG, S .
REVIEWS OF MODERN PHYSICS, 1989, 61 (01) :1-22
[20]   Quintessence, cosmic coincidence, and the cosmological constant [J].
Zlatev, I ;
Wang, LM ;
Steinhardt, PJ .
PHYSICAL REVIEW LETTERS, 1999, 82 (05) :896-899