Wall of fundamental constants - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Physical Review D Year : 2011

Wall of fundamental constants

Keith A. Olive
  • Function : Author
Marco Peloso


We consider the signatures of a domain wall produced in the spontaneous symmetry breaking involving a dilatonlike scalar field coupled to electromagnetism. Domains on either side of the wall exhibit slight differences in their respective values of the fine-structure constant, α. If such a wall is present within our Hubble volume, absorption spectra at large redshifts may or may not provide a variation in α relative to the terrestrial value, depending on our relative position with respect to the wall. This wall could resolve the contradiction between claims of a variation of α based on Keck/Hires data and of the constancy of α based on Very Large Telescope data. We derive the properties of the wall and the parameters of the underlying microscopic model required to reproduce the possible spatial variation of α. We discuss the constraints on the existence of the low-energy domain wall and describe its observational implications concerning the variation of the fundamental constants.
Fichier principal
Vignette du fichier
olive2011.pdf (278.32 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03646053 , version 1 (21-04-2022)



Keith A. Olive, Marco Peloso, Jean-Philippe Uzan. Wall of fundamental constants. Physical Review D, 2011, 83, ⟨10.1103/PhysRevD.83.043509⟩. ⟨insu-03646053⟩
11 View
9 Download



Gmail Facebook Twitter LinkedIn More