JOURNAL ARTICLE

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

  • Published In: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2024, v. 33, n. 3/4. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Le, T. D. 3 of 3

Abstract

Exploring the cosmological variations of fundamental dimensionless constants, such as the fine-structure constant, α , the proton-to-electron mass ratio, μ , 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 μ over extended time scales, Δ μ / μ = (0. 0 8 4 ± 1. 0 4 4) × 1 0 − 8 , incorporating the gravitational redshift z ≈ 5 × 1 0 − 5 . This finding represents a new tool for checking the parameters for Grand Unified Theories (GUTs). [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. 2024/02, Vol. 33, Issue 3/4, p1
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2024
  • ISSN:0218-2718
  • DOI:10.1142/S0218271824500135
  • Accession Number:176987774
  • Copyright Statement:Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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