Constraining fundamental parameters in modified gravity using Gaia-DR2 massive white dwarf observation

Abstract

Various experiments and observations have led researchers to suggest different bounds on fundamental constants like the fine-structure constant and the proton-to-electron mass ratio. These bounds differ mostly due to the energy scale of the systems where the experiments are performed. In this article, we obtain bounds on these parameters in the modified gravity context using the Gaia-DR2 massive white dwarf data and show that the bounds alter as the gravity theory changes. This exploration not only indicates strong support for non-negligible influences of modified gravity in astrophysical scenarios in high-density regimes but also reveals that the bounds on fundamental parameters can be much stronger under alternate gravity theories.

9 pages with 3 figures; accepted for publication in ApJ

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Cited by in corpus (5)

• Constraining Fundamental Constants with Fast Radio Bursts: Unveiling the Role of Energy Scale
• Effect of temperature on measurement of fundamental constants using white dwarfs in Gaia-EDR3 survey
• Effects of modified gravity on microscopic properties and cooling timescale of white dwarfs
• The fine structure constant: a review of measurement results and possible space-time variations
• Refining fundamental constants with white dwarfs: machine learning informed constraints on fine-structure constant and proton-to-electron mass ratio