Spectral energy distribution and generalized Wien's law for photons and cosmic string loops

D. Jou, M. S. Mongiovi, M. Sciacca

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2 Citations (Scopus)

Abstract

Physical objects with energy u (l) ∼ l? 3w, with l a characteristic length and w a dimensionless constant, lead to an equation of state p = w?, with p the pressure and ? the energy density. Special entities with this property are, for instance, photons (u = hc l, with l the wavelength) with w = 1 3, and some models of cosmic string loops (u = (c4 aG)l, with l the length of the loop and a a numerical constant), with w = ?1 3. Here, we discuss some features of the spectral energy distribution of these systems and the corresponding generalization of Wien's law, which in terms of l has the form Tl = constant mp 3w , being lmp the most probable size of the mentioned entities. © 2014 The Royal Swedish Academy of Sciences.
Original languageEnglish
Article number075002
JournalPhysica Scripta
Volume89
Issue number7
DOIs
Publication statusPublished - 1 Jul 2014

Keywords

  • cosmic string loops
  • dark energy
  • photons
  • statistical mechanics
  • Wien's law

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