Constraint on a Varying Proton-Electron Mass Ratio 1.5 Billion Years after the Big Bang

被引：26

作者：

Bagdonaite, J. ^{[1
,2
]}

Ubachs, W. ^{[1
,2
]}

Murphy, M. T. ^{[3
]}

Whitmore, J. B. ^{[3
]}

机构：

[1] Vrije Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands

[2] Vrije Univ Amsterdam, LaserLaB, NL-1081 HV Amsterdam, Netherlands

[3] Swinburne Univ Technol, Ctr Astrophys & Supercomp, Melbourne, Vic 3122, Australia

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

FINE-STRUCTURE CONSTANT; NOBEL LECTURE; FUNDAMENTAL CONSTANTS; MOLECULAR-HYDROGEN; REDSHIFT; ABSORPTION; LIMIT; QUINTESSENCE; EXPANSION;

D O I：

10.1103/PhysRevLett.114.071301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A molecular hydrogen absorber at a lookback time of 12.4 billion years, corresponding to 10% of the age of the Universe today, is analyzed to put a constraint on a varying proton- electron mass ratio, mu. A high resolution spectrum of the J1443+2724 quasar, which was observed with the Very Large Telescope, is used to create an accurate model of 89 Lyman and Werner band transitions whose relative frequencies are sensitive to mu, yielding a limit on the relative deviation from the current laboratory value of Delta mu/mu= (- 9.5 +/- 5.4(stat) +/- 5.3(syst)) x 10(-6).

引用

页数：6

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