Challenges for D-brane large-field inflation with stabilizer fields
Entity
UAM. Departamento de Física TeóricaPublisher
Springer Verlag; SISSADate
2016-09-19Citation
10.1007/JHEP09(2016)119
Journal of High Energy Physics 2016.9 (2016): 119
ISSN
1029-8479 (online); 1126-6708 (print)DOI
10.1007/JHEP09(2016)119Funded by
This work is partially supported by the grants FPA2012-32828 and and FPA2015-65480-P from MINECO, the ERC Advanced Grant SPLE under contract ERC-2012-ADG- 20120216-320421 and the grant SEV-2012-0249 of the “Centro de Excelencia Severo Ochoa” Programme. A.L. is supported through the FPI grant SVP-2013-067949 and the aid EEBBI-16-11573 from MINECO. A.L. and F.M. would like to thank UW-Madison for hospitality during completion of this workProject
Gobierno de España. FPA2012-32828; Gobierno de España. FPA2015-65480-P; Gobierno de España. SEV-2012-0249; info:eu-repo/grantAgreement/EC/FP7/320421Editor's Version
http://dx.doi.org/10.1007/JHEP09(2016)119Subjects
D-branes; Cosmology of theories beyond the SM; Supergravity models; FísicaNote
Journal of High Energy Physics 2016.9 (2016): 119 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)Rights
© The Author(s) 2016Abstract
We study possible string theory compactifications which, in the low-energy limit, describe chaotic inflation with a stabilizer field. We first analyze type IIA setups where the inflationary potential arises from a D6-brane wrapping an internal three-cycle, and where the stabilizer field is either an open-string or bulk Kahler modulus. We find that after integrating out the relevant closed-string moduli consistently, tachyonic directions arise during inflation which cannot be lifted. This is ultimately due to the shift symmetries of the type IIA Kahler potential at large compactification volume. This motivates us to search for stabilizer candidates in the complex structure sector of type IIB orientifolds, since these fields couple to D7-brane Wilson lines and their shift symmetries are generically broken away from the large complex structure limit. However, we find that in these setups the challenge is to obtain the necessary hierarchy between the inflationary and Kaluza-Klein scales
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Google Scholar:Landete, Aitor
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Marchesano, Fernando
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Wieck, Clemens
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