Effective cosmological constant within the expanding axion universe

M. P. Pierpoint, F. V. Kusmartsev

Research output: Contribution to journalArticlepeer-review

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We show that the value of an effective cosmological constant, Λeff, is influenced by the dimensionality of the space. Results were obtained in the framework of the axion model describing expansion of the inhomogeneous universe. Λeff determines the tension of the space (i.e. elasticity), and is relaxed when extra dimensions are accessible. We demonstrate that the effective value of the cosmological constant may be tuned to be consistent with experimental observation. Inhomogeneities considered are representative of temperature fluctuations observed within the cosmic microwave background radiation.

Original languageBritish English
Pages (from-to)3258-3268
Number of pages11
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number44
StatePublished - 12 Sep 2014


  • Axion
  • Cosmological constant
  • Quintessence
  • Screening


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