351 citations · 837 across the 8 of their papers we have counts for
8 papers
Do the constants of nature couple to strong gravitational fields?
S. P. Preval, M. A. Barstow, J. B. Holberg +5
Recently, white dwarf stars have found a new use in the fundamental physics community. Many prospective theories of the fundamental interactions of Nature allow traditional constan…
Limits on a Gravitational Field Dependence of the Proton--Electron Mass Ratio from H in White Dwarf Stars
Julija Bagdonaite, Edcel J. Salumbides, Simon P. Preval +4
Spectra of molecular hydrogen (H) are employed to search for a possible proton-to-electron mass ratio () dependence on gravity. The Lyman transitions of H, observed with…
Varying Alpha
John D. Barrow
We review properties of cosmological theories for the variation of the fine structure 'constant'. We highlight some general features of the cosmological models that exist in these…
The Power of General Relativity
Timothy Clifton, John D. Barrow
We study the cosmological and weak-field properties of theories of gravity derived by extending general relativity by means of a Lagrangian proportional to . This scale-fr…
Local and Global Variations of The Fine Structure Constant
D. F. Mota, J. D. Barrow
Using the BSBM varying-alpha theory, with dark matter dominated by magnetic energy, and the spherical collapse model for cosmological structure formation, we have studied the effec…
Varying Alpha in a More Realistic Universe
D. F. Mota, J. D. Barrow
We study the space-time evolution of the fine structure constant, , inside evolving spherical overdensities in a lambda-CDM Friedmann universe using the spherical infall model.…