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Updated: Feb 5, 2026
Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Monodromy Inflation in the Strong Coupling Regime of the Effective Field Theory
Guido D'Amico1, Nemanja Kaloper2, Albion Lawrence3
1Theoretical Physics Department, CERN, Geneva, Switzerland.
Abstract:
We present a simple effective field theory formulation of a general family of single-field flux monodromy models for which strong coupling effects at large field values can flatten the potential and activate higher-derivative operators. Both of these effects can suppress the tensor amplitude. These models are radiatively and nonperturbatively stable and can sustain ≳60 e folds of inflation. The dynamics combines features of both large-field chaotic inflation and k inflation. Reducing the tensor-scalar ratio below the observational bound r≲0.1 while keeping the scalar spectral index n_{s} within experimental bounds either yields equilateral non-Gaussianity f_{NL}^{eq}≃O(1), close to the current observational bounds, or gives very small r.
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