Cosmological variation of the proton-to-electron mass ratio constrained by strong gravitational fields

被引：4
作者：
Le, T. D. [1 ,2 ]
机构：
[1] Dong Nai Technol Univ, Div Appl Phys, Bien Hoa, Vietnam
[2] Dong Nai Technol Univ, Fac Engn, Bien Hoa, Vietnam
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2024年 / 33卷 / 03N04期
关键词：
Varying fundamental constants; varying-proton-to-electron mass ratio; white dwarf G191-B2B spectrum; data analysis; FINE-STRUCTURE CONSTANT; SPACE-TIME VARIATIONS; MOLECULAR-HYDROGEN ABSORPTION; LINE-OF-SIGHT; FUNDAMENTAL CONSTANTS; FE II; QUASAR J110325-264515; SEARCH; LIMIT; WAVELENGTHS;
D O I：
10.1142/S0218271824500135
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Exploring the cosmological variations of fundamental dimensionless constants, such as the fine-structure constant, alpha, the proton-to-electron mass ratio, mu, and the gravitational constant, G, is essential for testing new phenomena beyond the standard cosmological models. This study focuses on investigating the potential variation of constants by analyzing strong gravitational fields associated with white dwarf stars. Utilizing the observed spectrum of G191-B2B, we present a new constraint on the cosmological variation of mu over extended time scales, Delta mu/mu=(0.084 +/- 1.044)x10-8, incorporating the gravitational redshift z approximate to 5x10-5. This finding represents a new tool for checking the parameters for Grand Unified Theories (GUTs).
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页数：11
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