Variations in the fine-structure constant constraining gravity theories

被引：2

作者：

Bezerra, V. B. ^{[1
]}

Cunha, M. S. ^{[2
]}

Muniz, C. R. ^{[3
]}

Tahim, M. O. ^{[4
]}

Vieira, H. S. ^{[1
,5
]}

机构：

[1] Univ Fed Paraiba, Dept Fis, Caixa Postal 5008, BR-58051970 Joao Pessoa, Paraiba, Brazil

[2] Univ Estadual Ceara, Fis Teor Grp, Ctr Ciencias & Tecnol, BR-60740000 Fortaleza, Ceara, Brazil

[3] Univ Estadual Ceara, Fis Teor Grp, Fac Educ Ciencias & Letras Iguatu, Iguatu, Ceara, Brazil

[4] Univ Estadual Ceara, Fis Teor Grp, Fac Educ Ciencias & Letras Sertao Cent, Quixada, Ceara, Brazil

[5] Univ Estadual Paraiba, Ctr Ciencias Tecnol & Saude, BR-58233000 Araruna, PB, Brazil

来源：

EPL | 2016年 / 115卷 / 04期

关键词：

FUNDAMENTAL CONSTANTS; TIME-VARIATION;

D O I：

10.1209/0295-5075/115/40004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we investigate how the fine-structure constant, a, locally varies in the presence of a static and spherically symmetric gravitational source. The procedure consists in calculating the solution and the energy eigenvalues of a massive scalar field around that source, considering the weak-field regime. From this result, we obtain expressions for a spatially variable fine-structure constant by considering suitable modifications in the involved parameters admitting some scenarios of semi-classical and quantum gravities. Constraints on free parameters of the approached theories are calculated from astrophysical observations of the emission spectra of a white dwarf. Such constraints are finally compared with those obtained in the literature. Copyright (C) EPLA, 2016

引用

页数：7

共 40 条

[1] Neutrino spin oscillations in gravitational fields in noncommutative spaces [J].

Alavi, S. A. ;

Nodeh, S. .

PHYSICA SCRIPTA, 2015, 90 (03)

[2]

[Anonymous], 2006, ASTRON TELEGRAM 6349

[3]

[Anonymous], 1995, Heun's Differential Equations

[4] DOES FINE-STRUCTURE CONSTANT VARY WITH COSMIC TIME [J].

BAHCALL, JN ;

SCHMIDT, M .

PHYSICAL REVIEW LETTERS, 1967, 19 (22) :1294-&

[5] Constraining possible variations of the fine structure constant in strong gravitational fields with the Kα iron line [J].

Bambi, Cosimo .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2014, (03)

[6] Schwarzschild scalar wigs: Spectral analysis and late time behavior [J].

Barranco, Juan ;

Bernal, Argelia ;

Degollado, Juan Carlos ;

Diez-Tejedor, Alberto ;

Megevand, Miguel ;

Alcubierre, Miguel ;

Nunez, Dario ;

Sarbach, Olivier .

PHYSICAL REVIEW D, 2014, 89 (08)

[7] Behavior of varying-alpha cosmologies [J].

Barrow, JD ;

Sandvik, HB ;

Magueijo, J .

PHYSICAL REVIEW D, 2002, 65 (06)

[8] Generalized theory of varying alpha [J].

Barrow, John D. ;

Lip, Sean Z. W. .

PHYSICAL REVIEW D, 2012, 85 (02)

[9] Limits on the Dependence of the Fine-Structure Constant on Gravitational Potential from White-Dwarf Spectra [J].

Berengut, J. C. ;

Flambaum, V. V. ;

Ong, A. ;

Webb, J. K. ;

Barrow, John D. ;

Barstow, M. A. ;

Preval, S. P. ;

Holberg, J. B. .

PHYSICAL REVIEW LETTERS, 2013, 111 (01)

[10] Manifestations of a spatial variation of fundamental constants in atomic and nuclear clocks, Oklo, meteorites, and cosmological phenomena [J].

Berengut, J. C. ;

Flambaum, V. V. .

EPL, 2012, 97 (02)

← 1 2 3 4 →