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 50 条

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