Quantum fields in a big-crunch-big-bang spacetime

被引：51
作者：
Tolley, AJ [1 ]
Turok, N [1 ]
机构：
[1] CMS, DAMTP, Cambridge CB3 0WA, England
来源：
PHYSICAL REVIEW D | 2002年 / 66卷 / 10期
关键词：
D O I：
10.1103/PhysRevD.66.106005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider quantum field theory on a spacetime representing the big-crunch-big-bang transition postulated in ekpyrotic or cyclic cosmologies. We show via several independent methods that an essentially unique matching rule holds connecting the incoming state, in which a single extra dimension shrinks to zero, to the outgoing state in which it reexpands at the same rate. For free fields in our construction there is no particle production from the incoming adiabatic vacuum. When interactions are included the particle production for fixed external momentum is finite at the tree level. We discuss a formal correspondence between our construction and quantum field theory on de Sitter spacetime.
引用
收藏
页数：16
相关论文
共 39 条
[11]  
Craps B, 2002, J HIGH ENERGY PHYS
[12]   STRINGS ON ORBIFOLDS .2. [J].
DIXON, L ;
HARVEY, J ;
VAFA, C ;
WITTEN, E .
NUCLEAR PHYSICS B, 1986, 274 (02) :285-314
[13]   STRINGS ON ORBIFOLDS [J].
DIXON, L ;
HARVEY, JA ;
VAFA, C ;
WITTEN, E .
NUCLEAR PHYSICS B, 1985, 261 (04) :678-686
[14]   Adiabatic perturbations in pre-big bang models: Matching conditions and scale invariance [J].
Durrer, R ;
Vernizzi, F .
PHYSICAL REVIEW D, 2002, 66 (08)
[15]  
DURRER R, HEPTH0112026
[16]  
Elitzur S, 2002, J HIGH ENERGY PHYS
[17]  
FABINGER M, HEPTH0206196
[18]   Generation of a scale-invariant spectrum of adiabatic fluctuations in cosmological models with a contracting phase [J].
Finelli, F ;
Brandenberger, R .
PHYSICAL REVIEW D, 2002, 65 (10)
[19]   Pre-big-bang in string cosmology [J].
Gasperini, M. ;
Veneziano, G. .
ASTROPARTICLE PHYSICS, 1993, 1 (03) :317-339
[20]   SINGULAR STRING SOLUTIONS WITH NONSINGULAR INITIAL DATA [J].
HOROWITZ, GT ;
STEIF, AR .
PHYSICS LETTERS B, 1991, 258 (1-2) :91-96
1234