Consistency relations and degeneracies in (non)commutative patch inflation

被引：13
作者：
Calcagni, G
机构：
[1] Univ Parma, Dipartimento Fis M Melloni, I-43100 Parma, Italy
[2] Ist Nazl Fis Nucl, Grp Collegato Parma, I-43100 Parma, Italy
来源：
PHYSICS LETTERS B | 2005年 / 606卷 / 1-2期
关键词：
inflation; extra dimensions; noncommutative cosmology;
D O I：
10.1016/j.physletb.2004.11.075
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The consistency equations of patch inflation are considered in a next-to-leading-order slow-roll (SR) expansion. Some general aspects of braneworld degeneracy are pointed out, both with an ordinary scalar field and a Born-Infeld tachyon. The discussion is then extended to the maximally symmetric noncommutative case. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：177 / 183
页数：7
相关论文
共 13 条
[1]   Noncommutative spacetime, stringy spacetime uncertainty principle, and density fluctuations [J].
Brandenberger, R ;
Ho, PM .
PHYSICAL REVIEW D, 2002, 66 (02)
[2]  
Calcagni G, 2003, J COSMOL ASTROPART P
[3]   Degeneracy of consistency equations in braneworld inflation [J].
Calcagni, G .
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2004, (06) :15-30
[4]   Observational constraints on patch inflation in noncommutative spacetime [J].
Calcagni, G ;
Tsujikawa, S .
PHYSICAL REVIEW D, 2004, 70 (10) :103514-1
[5]   Noncommutative models in patch cosmology [J].
Calcagni, G .
PHYSICAL REVIEW D, 2004, 70 (10) :103525-1
[6]   Slow-roll parameters in braneworld cosmologies [J].
Calcagni, G .
PHYSICAL REVIEW D, 2004, 69 (10)
[7]   Cosmological perturbations from braneworld inflation with a Gauss-Bonnet term [J].
Dufaux, JF ;
Lidsey, JE ;
Maartens, R ;
Sami, M .
PHYSICAL REVIEW D, 2004, 70 (08)
[8]  
Huey G, 2002, PHYS REV D, V66, DOI 10.1103/PhysRevD.66.043514
[9]   Inflation, braneworlds and quintessence [J].
Huey, G ;
Lidsey, JE .
PHYSICS LETTERS B, 2001, 514 (3-4) :217-225
[10]   Gravitational waves from inflation on the brane [J].
Langlois, D ;
Maartens, R ;
Wands, D .
PHYSICS LETTERS B, 2000, 489 (3-4) :259-267
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