New confining force solution of QCD axion domain wall problem

Abstract

The serious cosmological problems created by the axion-string/axion-domain-wall system in standard axion models are alleviated by positing the existence of a new confining force. The instantons of this force can generate an axion potential that erases the axion strings long before QCD effects become important, thus preventing QCD-generated axion walls from ever appearing. Axion walls generated by the new confining force would decay so early as not to contribute significantly to the energy in axion dark matter.

LaTeX file of 5 pages

References in corpus (5)

• Toward an Understanding of Foreground Emission in the BICEP2 Region
• A joint analysis of Planck and BICEP2 B modes including dust polarization uncertainty
• Update of axion CDM energy density
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Cited by in corpus (5)

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• Axion Dark Matter Research with IBS/CAPP
• S.M.A.S.H.E.D.: Standard Model Axion Seesaw Higgs Inflation Extended for Dirac Neutrinos
• Strong CP problem, axions, and cosmological implications of CP violation