VACUUM DENSITY-FLUCTUATIONS IN EXTENDED CHAOTIC INFLATION

被引：27

作者：

DERUELLE, N ^{[1
]}

GUNDLACH, C ^{[1
]}

LANGLOIS, D ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, DEPT APPL MATH & THEORET PHYS, CAMBRIDGE CB3 9EW, ENGLAND

来源：

PHYSICAL REVIEW D | 1992年 / 46卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.46.5337

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An inflaton (scalar field) with the potential csigma2n is coupled to gravity within the Jordan-Brans-Dicke theory. The corresponding inflationary model (that is, a flat Friedmann-Robertson-Walker solution with a slowly varying inflaton) is constructed for all values of the coupling beta of the inflaton to the dilaton (Brans-Dicke scalar field). The linearized perturbations of the metric, the dilaton, and the inflaton are then quantized within a gauge-invariant formalism. The power spectrum of the vacuum density fluctuations is calculated as a function of c,n, and beta. It is the juxtaposition of two powers of the wave number corresponding, respectively, to the contribution of the inflaton and the dilaton. We find the value of beta for which the dilaton contribution dominates on observable cosmological scales.

引用

页码：5337 / 5345

页数：9

共 36 条

[1]

[Anonymous], 1996, TABLES INTEGRALS SER

[2] GAUGE-INVARIANT COSMOLOGICAL PERTURBATIONS [J].

BARDEEN, JM .

PHYSICAL REVIEW D, 1980, 22 (08) :1882-1905

[3] SPONTANEOUS CREATION OF ALMOST SCALE-FREE DENSITY PERTURBATIONS IN AN INFLATIONARY UNIVERSE [J].

BARDEEN, JM ;

STEINHARDT, PJ ;

TURNER, MS .

PHYSICAL REVIEW D, 1983, 28 (04) :679-693

[4]

BRANDENBERGER R, 1990, PHYSICS EARLY UNIVER

[5] MACHS PRINCIPLE AND A RELATIVISTIC THEORY OF GRAVITATION [J].

BRANS, C ;

DICKE, RH .

PHYSICAL REVIEW, 1961, 124 (03) :925-&

[6] NUCLEOSYNTHESIS CONSTRAINTS ON AN EXTENDED JORDAN-BRANS-DICKE THEORY [J].

DAMOUR, T ;

GUNDLACH, C .

PHYSICAL REVIEW D, 1991, 43 (12) :3873-3877

[7] DARK MATTER, TIME-VARYING G, AND A DILATON FIELD [J].

DAMOUR, T ;

GIBBONS, GW ;

GUNDLACH, C .

PHYSICAL REVIEW LETTERS, 1990, 64 (02) :123-126

[8] PERTURBATIONS OF EXTENDED INFLATION [J].

DERUELLE, N ;

GUNDLACH, C ;

LANGLOIS, D .

PHYSICAL REVIEW D, 1992, 45 (10) :R3301-R3303

[9] THE GROWTH OF DENSITY-FLUCTUATIONS IN A SIMPLIFIED MODEL OF EXTENDED INFLATION [J].

DERUELLE, N ;

GUNDLACH, C ;

POLARSKI, D .

CLASSICAL AND QUANTUM GRAVITY, 1992, 9 (06) :1511-1524

[10] MACHS PRINCIPLE AND INVARIANCE UNDER TRANSFORMATION OF UNITS [J].

DICKE, RH .

PHYSICAL REVIEW, 1962, 125 (06) :2163-&

← 1 2 3 4 →