Exact solutions of modified GST cosmology

被引：7
作者：
Fukui, T [1 ]
Arai, K
Hashimoto, M
机构：
[1] Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada
[2] Kumamoto Univ, Dept Phys, Kumamoto 8608555, Japan
[3] Kyushu Univ, Dept Phys, Fukuoka 8108560, Japan
[4] Dokkyo Univ, Soka, Saitama 3400042, Japan
来源：
CLASSICAL AND QUANTUM GRAVITY | 2001年 / 18卷 / 11期
关键词：
D O I：
10.1088/0264-9381/18/11/306
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The generalized scalar-tensor (GST) theory is modified. In the modified GST theory, the cosmological term A is a function of the scalar field phi and of its time derivative phi (2) as well. We obtain exact solutions for the scale factor, the scalar field and the cosmological term which evolves with a different dependence on time for each era of the universe. The cosmological 'constant' and flatness problems are examined in the simple case of a flat universe.
引用
收藏
页码：2087 / 2096
页数：10
相关论文
共 31 条
  • [1] ARAI K, 1987, ASTRON ASTROPHYS, V179, P17
  • [2] k-Inflation
    Armendáriz-Picón, C
    Damour, T
    Mukhanov, V
    [J]. PHYSICS LETTERS B, 1999, 458 (2-3) : 209 - 218
  • [3] Bergmann PG, 1968, INT J THEOR PHYS, V1, P25, DOI DOI 10.1007/BF00668828
  • [4] BLAU SK, 1987, 300 YEARS GRAVITATIO, P524
  • [5] BORNER G, 1988, EARLY U, P272
  • [6] Cosmological imprint of an energy component with general equation of state
    Caldwell, RR
    Dave, R
    Steinhardt, PJ
    [J]. PHYSICAL REVIEW LETTERS, 1998, 80 (08) : 1582 - 1585
  • [7] CHIBA T, 1999, P 9 WORKSH GEN REL G, P268
  • [8] WHY THERE IS NOTHING RATHER THAN SOMETHING - A THEORY OF THE COSMOLOGICAL CONSTANT
    COLEMAN, S
    [J]. NUCLEAR PHYSICS B, 1988, 310 (3-4) : 643 - 668
  • [9] COSMOLOGICAL TERM AND A MODIFIED BRANS-DICKE COSMOLOGY
    ENDO, M
    FUKUI, T
    [J]. GENERAL RELATIVITY AND GRAVITATION, 1977, 8 (10) : 833 - 839
  • [10] Etoh T, 1997, ASTRON ASTROPHYS, V325, P893
1234