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The European Physical Journal C

, Volume 50, Issue 3, pp 635–646 | Cite as

A Planck-scale axion and SU(2) Yang–Mills dynamics: present acceleration and the fate of the photon

  • F. Giacosa
  • R. HofmannEmail author
Regular Article - Theoretical Physics

Abstract

From the time of CMB decoupling onwards we investigate cosmological evolution subject to a strongly interacting SU(2) gauge theory of Yang–Mills scale, Λ ∼ 10-4 eV (masquerading as the U(1)Y factor of the SM at present). The viability of this postulate is discussed in view of cosmological and (astro-) particle physics bounds. The gauge theory is coupled to a spatially homogeneous and ultralight (Planck-scale) axion field. As first pointed out by Frieman et al., such an axion is a viable candidate for quintessence, i.e. dynamical dark energy, being associated with today’s cosmological acceleration. A prediction of an upper limit for Δtmγ=0, the duration of the epoch stretching from the present to the point where the photon starts to be Meissner massive, is obtained: Δtmγ=0∼2.2 billion years.

Keywords

Dark Energy Charged Lepton Topological Defect Mill Theory Gluon Condensate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  1. 1.Institut für Theoretische PhysikUniversität Frankfurt, Johann Wolfgang Goethe-UniversitätFrankfurtGermany

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