Challenges for large-field inflation and moduli stabilization

Buchmüller, W.; Dudas, Emilian; Heurtier, Lucien; Westphal, Alexander; Wieck, Clemens; Winkler, Martin Wolfgang

doi:10.1007/jhep04(2015)058

Cited by 63 publications

(100 citation statements)

References 85 publications

(165 reference statements)

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“…It would be interesting to build concrete examples of this type IIA scenario, as well as to explore similar string theory setups like type IIB with D7-branes. Finally, it would be interesting to see the effect of oneloop corrections to our moduli stabilisation scenario, to generalise it to consider some non-vanishing F-terms for massive moduli and to carry an analysis along the lines of [26,27]. We hope to report on these issues in the future.…”

Section: Arxiv:150507871v2 [Hep-th] 2 Dec 2015mentioning

confidence: 99%

Large field inflation from D-branes

et al. 2016

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We propose new large field inflation scenarios built on the framework of F-term axion monodromy. Our setup is based on string compactifications where D-branes create potentials for closed string axions via F-terms. Because the source of the axion potential is different from the standard sources of moduli stabilisation, it is possible to lower the inflaton mass as compared to other massive scalars. We discuss a particular class of models based on type IIA flux compactifications with D6-branes. In the small field regime they describe supergravity models of quadratic chaotic inflation with a stabiliser field. In the large field regime the inflaton potential displays a flattening effect due to Planck suppressed corrections, allowing to easily fit the cosmological parameters of the model within current experimental bounds.

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Section: Arxiv:150507871v2 [Hep-th] 2 Dec 2015mentioning

confidence: 99%

Large field inflation from D-branes

et al. 2016

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“…However the presence of large F-term contributions in the vacuum could backreact on the inflation trajectory under the form of soft-terms in the scalar potential, as detailed in [38,54]. Such implementation would strongly depend on the SUSY breaking sector added to the model.…”

Section: Jhep06(2017)109mentioning

confidence: 99%

Sneutrino driven GUT inflation in supergravity

Gonzalo¹,

Heurtier²,

Moursy³

2017

J. High Energ. Phys.

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In this paper, we embed the model of flipped GUT sneutrino inflation -in a flipped SU(5) or SO(10) set up -developed by Ellis et al. in a supergravity framework. The GUT symmetry is broken by a waterfall which could happen at early or late stage of the inflationary period. The full field dynamics is thus studied in detail and these two main inflationary configurations are exposed, whose cosmological predictions are both in agreement with recent astrophysical measurements. The model has an interesting feature where the inflaton has natural decay channels to the MSSM particles allowed by the GUT gauge symmetry. Hence it can account for the reheating after the inflationary epoch.

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“…The interplay of such moduli with inflation has been studied in many instances. Here, we follow and extend the work of [27] which is concerned with the backreaction in chaotic inflation with a quadratic potential. We demonstrate that the non-decoupling effects found in [27] arise more generally and may have severe implications for both plateau-like inflation and natural inflation.…”

Section: Jhep10(2015)062mentioning

confidence: 99%

“…Here, we follow and extend the work of [27] which is concerned with the backreaction in chaotic inflation with a quadratic potential. We demonstrate that the non-decoupling effects found in [27] arise more generally and may have severe implications for both plateau-like inflation and natural inflation. 4 In addition to moduli fields from string compactifications there may be other heavy fields which cause relevant backreactions on the inflaton potential.…”

Section: Jhep10(2015)062mentioning

confidence: 99%

“…Once W 1 breaks supersymmetry, however, there is a mixing between the 5 As in [27,29] we consider setups in which the heavy fields trace their inflaton-dependent minima instantaneously and adiabatically. In this sense our approach is different from the one taken in [30][31][32][33][34][35], where the authors consider sharp turns of inflationary trajectories in the valleys of heavy fields.…”

Section: Backreaction Of Heavy Stabilizer Fieldsmentioning

confidence: 99%

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Moduli backreaction and supersymmetry breaking in string-inspired inflation models

Dudas

Wieck

2015

J. High Energ. Phys.

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Abstract:We emphasize the importance of effects from heavy fields on supergravity models of inflation. We study, in particular, the backreaction of stabilizer fields and geometric moduli in the presence of supersymmetry breaking. Many effects do not decouple even if those fields are much heavier than the inflaton field. We apply our results to successful models of Starobinsky-like inflation and natural inflation. In most scenarios producing a plateau potential it proves difficult to retain the flatness of the potential after backreactions are taken into account. Some of them are incompatible with non-perturbative moduli stabilization. In natural inflation there exist a number of models which are not constrained by backreactions at all. In those cases the correction terms from heavy fields have the same inflaton-dependence as the uncorrected potential, so that inflation may be possible even for very large gravitino masses.

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Challenges for large-field inflation and moduli stabilization

Cited by 63 publications

References 85 publications

Large field inflation from D-branes

Large field inflation from D-branes

Sneutrino driven GUT inflation in supergravity

Moduli backreaction and supersymmetry breaking in string-inspired inflation models

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