Structure formation constraints on the Jordan-Brans-Dicke theory

被引：73

作者：

Acquaviva, V

Baccigalupi, C

Leach, SM

Liddle, AR

Perrotta, F

机构：

[1] SISSA, ISAS, I-34014 Trieste, Italy

[2] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

[3] Univ Sussex, Ctr Astron, Brighton BN1 9QH, E Sussex, England

[4] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland

来源：

PHYSICAL REVIEW D | 2005年 / 71卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.71.104025

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use cosmic microwave background data from WMAP, ACBAR, VSA and CBI, and galaxy power spectrum data from 2dF, to constrain flat cosmologies based on the Jordan-Brans-Dicke theory, using a Markov chain Monte Carlo approach. Using a parametrization based on xi = 1/4 omega, and performing an exploration in the range ln xi is an element of [-9,3], we obtain a 95% marginalized probability bound of ln xi < -6.2, corresponding to a 95% marginalized probability lower bound on the Brans-Dicke parameter omega > 120.

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页码：1 / 6

页数：6

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