Chaotic dynamics and two-field inflation

被引:22
作者
Easther, R [1 ]
Maeda, K
机构
[1] Brown Univ, Dept Phys, Providence, RI 02912 USA
[2] Waseda Univ, Dept Phys, Shinjuku Ku, Tokyo 169, Japan
关键词
D O I
10.1088/0264-9381/16/5/313
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We demonstrate the existence of chaos in realistic models of two-held inflation. The chaotic motion takes place after the end of inflation, when the fields are free to oscillate and their motion is only lightly damped by the expansion of the universe. We then investigate whether the presence of chaos affects the predictions of two-field models, and show that chaos enhances the production of topological defects and renders the growth rate of the universe sensitively dependent upon the 'initial' conditions at the beginning of the oscillatory era.
引用
收藏
页码:1637 / 1652
页数:16
相关论文
共 33 条
[1]   REHEATING AN INFLATIONARY UNIVERSE [J].
ALBRECHT, A ;
STEINHARDT, PJ ;
TURNER, MS ;
WILCZEK, F .
PHYSICAL REVIEW LETTERS, 1982, 48 (20) :1437-1440
[2]  
[Anonymous], 1993, CHAOS DYNAMICAL SYST
[3]   THE FRACTAL DIMENSION OF THE INFLATIONARY UNIVERSE [J].
ARYAL, M ;
VILENKIN, A .
PHYSICS LETTERS B, 1987, 199 (03) :351-357
[4]  
BOMBELLI L, 1997, GRQC9707051
[5]   STABILITY CONCEPTS IN NUMERICAL-SOLUTION OF CLASSICAL ATOMIC AND MOLECULAR SCATTERING PROBLEMS [J].
BRUMER, P .
JOURNAL OF COMPUTATIONAL PHYSICS, 1974, 14 (04) :391-419
[6]   CHAOTIC FRIEDMANN-ROBERTSON-WALKER COSMOLOGY [J].
CALZETTA, E ;
ELHASI, C .
CLASSICAL AND QUANTUM GRAVITY, 1993, 10 (09) :1825-1841
[7]   NONTRIVIAL DYNAMICS IN THE EARLY STAGES OF INFLATION [J].
CALZETTA, E ;
ELHASI, C .
PHYSICAL REVIEW D, 1995, 51 (06) :2713-2728
[8]   FALSE VACUUM INFLATION WITH EINSTEIN GRAVITY [J].
COPELAND, EJ ;
LIDDLE, AR ;
LYTH, DH ;
STEWART, ED ;
WANDS, D .
PHYSICAL REVIEW D, 1994, 49 (12) :6410-6433
[9]   Chaos, fractals, and inflation [J].
Cornish, NJ ;
Levin, JJ .
PHYSICAL REVIEW D, 1996, 53 (06) :3022-3032
[10]  
CORNISH NJ, 1997, GRQC9708046