Large field inflation from D-branes

Abstract

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.

5 pages, 3 figures. Typos corrected and plots updated

References in corpus (18)

• A Joint Analysis of BICEP2/Keck Array and Planck Data
• Monodromy in the CMB: Gravity Waves and String Inflation
• General inflaton potentials in supergravity
• F-term Axion Monodromy Inflation
• D7-Brane Chaotic Inflation
• Towards Universal Axion Inflation and Reheating in String Theory
• Challenges for Large-Field Inflation and Moduli Stabilization
• The Challenge of Realizing F-term Axion Monodromy Inflation in String Theory
• Higgs-otic Inflation and String Theory
• The effective action of D6-branes in N=1 type IIA orientifolds
• Axion Monodromy Inflation on Warped Throats
• Open String Wavefunctions in Warped Compactifications
• Coisotropic D8-branes and Model-building
• Supersymmetric Moduli Stabilization and High-Scale Inflation
• Three-form multiplet and Inflation
• D6-branes and axion monodromy inflation
• On D-brane moduli stabilisation
• Multifield Dynamics in Higgs-otic Inflation

Cited by in corpus (15)

• Backreacted Axion Field Ranges in String Theory
• Relaxion Monodromy and the Weak Gravity Conjecture
• Axion Monodromy and the Weak Gravity Conjecture
• Minkowski 3-forms, Flux String Vacua, Axion Stability and Naturalness
• Mass Hierarchies and Dynamical Field Range
• D6-branes and axion monodromy inflation
• Flux Flattening in Axion Monodromy Inflation
• Type IIA Flux Vacua with Mobile D6-branes
• Gravitational Waves from Axion Monodromy
• Challenges for D-brane large-field inflation with stabilizer fields
• Phases of Inflation
• Moduli backreaction and supersymmetry breaking in string-inspired inflation models
• The DBI Action, Higher-derivative Supergravity, and Flattening Inflaton Potentials
• Strong Dynamics and Natural Inflation
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme