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Published February 3, 2006 | Published + Accepted Version
Journal Article Open

Exotic Axion Cosmology in Theories with Phase Transitions below the QCD Scale

Abstract

We show that axion phenomenology may be significantly different than conventionally assumed in theories which exhibit late phase transitions (below the QCD scale). In such theories, one can find multiple pseudoscalars with axionlike couplings to matter, including a string scale axion, whose decay constant far exceeds the conventional cosmological bound. Such theories have several dark matter candidates.

Additional Information

© 2006 American Physical Society. (Received 28 July 2005; published 30 January 2006) We are grateful for numerous conversations about this work with C. Hogan and A. Nelson. This work was supported by DOE Grant No. DE-FGO3-00ER41132.

Attached Files

Published - PhysRevLett.96.041301.pdf

Accepted Version - 0507236.pdf

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