Unifying cosmological and recent time variations of fundamental couplings

被引：23

作者：

Dent, Thomas ^{[1
]}

Stern, Steffen ^{[1
]}

Wetterich, Christof ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.78.103518

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A number of positive and null results on the time variation of fundamental constants have been reported. It is difficult to judge whether or not these claims are mutually consistent, since the observable quantities depend on several parameters, namely, the coupling strengths and masses of particles. The evolution of these coupling-parameters over cosmological history is also a priori unknown. A direct comparison requires a relation between the couplings. We explore several distinct scenarios based on unification of gauge couplings, providing a representative (though not exhaustive) sample of such relations. For each scenario we obtain a characteristic time dependence and discuss whether a monotonic time evolution is allowed. For all scenarios, some contradictions between different observations appear. We show how a clear observational determination of nonzero variations would test the dominant mechanism of varying couplings within unified theories.

引用

收藏

页数：17

相关论文

共 75 条

[21] Quantifying uncertainties in primordial nucleosynthesis without Monte Carlo simulations [J].

Fiorentini, G ;

Lisi, E ;

Sarkar, S ;

Villante, FL .

PHYSICAL REVIEW D, 1998, 58 (06)

[22] Limit on the cosmological variation of mp/me from the inversion spectrum of ammonia [J].

Flambaum, V. V. ;

Kozlov, M. G. .

PHYSICAL REVIEW LETTERS, 2007, 98 (24)

[23] Dependence of hadronic properties on quark masses and constraints on their cosmological variation [J].

Flambaum, VV ;

Shuryak, EV .

PHYSICAL REVIEW D, 2003, 67 (08)

[24] Precision atomic spectroscopy for improved limits on variation of the fine structure constant and local position invariance [J].

Fortier, T. M. ;

Ashby, N. ;

Bergquist, J. C. ;

Delaney, M. J. ;

Diddams, S. A. ;

Heavner, T. P. ;

Hollberg, L. ;

Itano, W. M. ;

Jefferts, S. R. ;

Kim, K. ;

Levi, F. ;

Lorini, L. ;

Oskay, W. H. ;

Parker, T. E. ;

Stalnaker, J. E. .

PHYSICAL REVIEW LETTERS, 2007, 98 (07)

[25] How strongly does dating meteorites constrain the time-dependence of the fine-structure constant? [J].

Fujii, Y ;

Iwamoto, A .

MODERN PHYSICS LETTERS A, 2005, 20 (32) :2417-2434

[26] Re/Os constraint on the time variability of the fine-structure constant [J].

Fujii, Y ;

Iwamoto, A .

PHYSICAL REVIEW LETTERS, 2003, 91 (26)

[27] Possible time-variability of the fine-structure constant expected from the accelerating universe [J].

Fujii, Yasunori .

PHYSICS LETTERS B, 2008, 660 (03) :87-92

[28] Time variability of α from realistic models of Oklo reactors [J].

Gould, C. R. ;

Sharapov, E. I. ;

Lamoreaux, S. K. .

PHYSICAL REVIEW C, 2006, 74 (02)

[29] Testing the constancy of the gravitational constant using helioseismology [J].

Guenther, DB ;

Krauss, LM ;

Demarque, P .

ASTROPHYSICAL JOURNAL, 1998, 498 (02) :871-876

[30] EXPERIMENTAL TEST OF THE VARIABILITY OF G USING VIKING LANDER RANGING DATA [J].

HELLINGS, RW ;

ADAMS, PJ ;

ANDERSON, JD ;

KEESEY, MS ;

LAU, EL ;

STANDISH, EM ;

CANUTO, VM ;

GOLDMAN, I .

PHYSICAL REVIEW LETTERS, 1983, 51 (18) :1609-1612

← 1 2 3 4 5 6 7 8 →