Constraints on axion inflation from the weak gravity conjecture
Abstract
We derive constraints facing models of axion inflation based on decay constant alignment from a stringtheoretic and quantum gravitational perspective. In particular, we investigate the prospects for alignment and ‘antialignment’ of C{sub 4} axion decay constants in type IIB string theory, deriving a strict nogo result in the latter case. We discuss the relationship of axion decay constants to the weak gravity conjecture and demonstrate agreement between our stringtheoretic constraints and those coming from the ‘generalized’ weak gravity conjecture. Finally, we consider a particular model of decay constant alignment in which the potential of C{sub 4} axions in type IIB compactifications on a CalabiYau threefold is dominated by contributions from D7branes, pointing out that this model evades some of the challenges derived earlier in our paper but is highly constrained by other geometric considerations.
 Authors:

 Jefferson Physical Laboratory, Harvard University,Cambridge, MA 02138 (United States)
 Publication Date:
 Sponsoring Org.:
 SCOAP3, CERN, Geneva (Switzerland)
 OSTI Identifier:
 22458373
 Resource Type:
 Journal Article
 Journal Name:
 Journal of Cosmology and Astroparticle Physics
 Additional Journal Information:
 Journal Volume: 2015; Journal Issue: 09; Other Information: PUBLISHERID: JCAP09(2015)020; OAI: oai:repo.scoap3.org:11742; Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 14757516
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ALIGNMENT; AXIONS; COSMOLOGICAL INFLATION; COSMOLOGY; LIMITING VALUES; QUANTUM GRAVITY; STRING THEORY
Citation Formats
Rudelius, Tom. Constraints on axion inflation from the weak gravity conjecture. United States: N. p., 2015.
Web. doi:10.1088/14757516/2015/09/020.
Rudelius, Tom. Constraints on axion inflation from the weak gravity conjecture. United States. doi:10.1088/14757516/2015/09/020.
Rudelius, Tom. Tue .
"Constraints on axion inflation from the weak gravity conjecture". United States. doi:10.1088/14757516/2015/09/020.
@article{osti_22458373,
title = {Constraints on axion inflation from the weak gravity conjecture},
author = {Rudelius, Tom},
abstractNote = {We derive constraints facing models of axion inflation based on decay constant alignment from a stringtheoretic and quantum gravitational perspective. In particular, we investigate the prospects for alignment and ‘antialignment’ of C{sub 4} axion decay constants in type IIB string theory, deriving a strict nogo result in the latter case. We discuss the relationship of axion decay constants to the weak gravity conjecture and demonstrate agreement between our stringtheoretic constraints and those coming from the ‘generalized’ weak gravity conjecture. Finally, we consider a particular model of decay constant alignment in which the potential of C{sub 4} axions in type IIB compactifications on a CalabiYau threefold is dominated by contributions from D7branes, pointing out that this model evades some of the challenges derived earlier in our paper but is highly constrained by other geometric considerations.},
doi = {10.1088/14757516/2015/09/020},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {14757516},
number = 09,
volume = 2015,
place = {United States},
year = {2015},
month = {9}
}