publication . Article . Other literature type . Preprint . 2010

String axiverse

Arvanitaki, A; Dimopoulos, S; Dubovsky, S; Kaloper, N; March-Russell, J;
Open Access
  • Published: 28 Jun 2010 Journal: Physical Review D, volume 81 (issn: 1550-7998, eissn: 1550-2368, Copyright policy)
  • Publisher: American Physical Society (APS)
  • Country: United Kingdom
Abstract
String theory suggests the simultaneous presence of many ultralight axions possibly populating each decade of mass down to the Hubble scale 10^-33eV. Conversely the presence of such a plenitude of axions (an "axiverse") would be evidence for string theory, since it arises due to the topological complexity of the extra-dimensional manifold and is ad hoc in a theory with just the four familiar dimensions. We investigate how upcoming astrophysical experiments will explore the existence of such axions over a vast mass range from 10^-33eV to 10^-10eV. Axions with masses between 10^-33eV to 10^-28eV cause a rotation of the CMB polarization that is constant throughout ...
Subjects
arXiv: Astrophysics::High Energy Astrophysical Phenomena
free text keywords: Nuclear and High Energy Physics, High Energy Physics - Theory, Astrophysics - Cosmology and Nongalactic Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Phenomenology
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