One-loop Pfaffians and large-field inflation in string theory
We study the consistency of large-field inflation in low-energy effective field theories of string theory. In particular, we focus on the stability of Kähler moduli in the particularly interesting case where the non-perturbative superpotential of the Kähler sector explicitly depends on the inflaton...
| Главные авторы: | , |
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| Формат: | Journal article |
| Опубликовано: |
Elsevier
2017
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| _version_ | 1826272699742158848 |
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| author | Ruehle, F Wieck, C |
| author_facet | Ruehle, F Wieck, C |
| author_sort | Ruehle, F |
| collection | OXFORD |
| description | We study the consistency of large-field inflation in low-energy effective field theories of string theory. In particular, we focus on the stability of Kähler moduli in the particularly interesting case where the non-perturbative superpotential of the Kähler sector explicitly depends on the inflaton field. This situation arises generically due to one-loop corrections to the instanton action. The field dependence of the modulus potential feeds back into the inflationary dynamics, potentially impairing slow roll. We distinguish between world-sheet instantons from Euclidean D-branes, which typically yield polynomial one-loop Pfaffians, and gaugino condensates, which can yield exponential or periodic corrections. In all scenarios successful slow-roll inflation imposes bounds on the magnitude of the one-loop correction, corresponding to constraints on possible compactifications. While we put a certain emphasis on Type IIB constructions with mobile D7-branes, our results seem to apply more generally. |
| first_indexed | 2024-03-06T22:16:43Z |
| format | Journal article |
| id | oxford-uuid:539e1a0c-4324-4132-979b-7e45c0f61e53 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:16:43Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:539e1a0c-4324-4132-979b-7e45c0f61e532022-03-26T16:32:51ZOne-loop Pfaffians and large-field inflation in string theoryJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:539e1a0c-4324-4132-979b-7e45c0f61e53Symplectic Elements at OxfordElsevier2017Ruehle, FWieck, CWe study the consistency of large-field inflation in low-energy effective field theories of string theory. In particular, we focus on the stability of Kähler moduli in the particularly interesting case where the non-perturbative superpotential of the Kähler sector explicitly depends on the inflaton field. This situation arises generically due to one-loop corrections to the instanton action. The field dependence of the modulus potential feeds back into the inflationary dynamics, potentially impairing slow roll. We distinguish between world-sheet instantons from Euclidean D-branes, which typically yield polynomial one-loop Pfaffians, and gaugino condensates, which can yield exponential or periodic corrections. In all scenarios successful slow-roll inflation imposes bounds on the magnitude of the one-loop correction, corresponding to constraints on possible compactifications. While we put a certain emphasis on Type IIB constructions with mobile D7-branes, our results seem to apply more generally. |
| spellingShingle | Ruehle, F Wieck, C One-loop Pfaffians and large-field inflation in string theory |
| title | One-loop Pfaffians and large-field inflation in string theory |
| title_full | One-loop Pfaffians and large-field inflation in string theory |
| title_fullStr | One-loop Pfaffians and large-field inflation in string theory |
| title_full_unstemmed | One-loop Pfaffians and large-field inflation in string theory |
| title_short | One-loop Pfaffians and large-field inflation in string theory |
| title_sort | one loop pfaffians and large field inflation in string theory |
| work_keys_str_mv | AT ruehlef onelooppfaffiansandlargefieldinflationinstringtheory AT wieckc onelooppfaffiansandlargefieldinflationinstringtheory |