Current and future white dwarf mass-radius constraints on varying fundamental couplings and unification scenarios

  title={Current and future white dwarf mass-radius constraints on varying fundamental couplings and unification scenarios},
  author={D. Magano and Joao Vilas Boas and Carlos J. A. P. Martins},
  journal={Physical Review D},
We discuss the feasibility of using astrophysical observations of white dwarfs as probes of fundamental physics. We quantify the effects of varying fundamental couplings on the white dwarf mass-radius relation in a broad class of unification scenarios, both for the simple case of a polytropic stellar structure model and for more general models. Independent measurements of the mass and radius, together with direct spectroscopic measurements of the fine-structure constant in white dwarf… 

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