Monodromy Inflation in the Strong Coupling Regime of the Effective Field Theory
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 ns within experimental bounds either yields equilateral non-Gaussianity f ≃ O(1) , close to the current observational bounds, or gives very small r .
- Authors:
- Publication Date:
- Research Org.:
- Brandeis Univ., Waltham, MA (United States); Univ. of California, Davis, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1467761
- Alternate Identifier(s):
- OSTI ID: 1502070
- Grant/Contract Number:
- SC0009999; SC0009987
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 121 Journal Issue: 9; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
D’Amico, Guido, Kaloper, Nemanja, and Lawrence, Albion. Monodromy Inflation in the Strong Coupling Regime of the Effective Field Theory. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.121.091301.
D’Amico, Guido, Kaloper, Nemanja, & Lawrence, Albion. Monodromy Inflation in the Strong Coupling Regime of the Effective Field Theory. United States. https://doi.org/10.1103/PhysRevLett.121.091301
D’Amico, Guido, Kaloper, Nemanja, and Lawrence, Albion. Thu .
"Monodromy Inflation in the Strong Coupling Regime of the Effective Field Theory". United States. https://doi.org/10.1103/PhysRevLett.121.091301.
@article{osti_1467761,
title = {Monodromy Inflation in the Strong Coupling Regime of the Effective Field Theory},
author = {D’Amico, Guido and Kaloper, Nemanja and Lawrence, Albion},
abstractNote = {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 ns within experimental bounds either yields equilateral non-Gaussianity feqNL ≃ O(1) , close to the current observational bounds, or gives very small r .},
doi = {10.1103/PhysRevLett.121.091301},
journal = {Physical Review Letters},
number = 9,
volume = 121,
place = {United States},
year = {Thu Aug 30 00:00:00 EDT 2018},
month = {Thu Aug 30 00:00:00 EDT 2018}
}
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https://doi.org/10.1103/PhysRevLett.121.091301
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Cited by: 23 works
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Figures / Tables:
FIG. 1. : Planck constraints in the ns − r plane for the ΛCDM model for Veff ∼ $\phi$p, with p’s listed in the legend, and a quartic kinetic term. The solid lines denote cs = 1; the dashed lines cs = 0.6. The colored circles denote normalizations at 50more »
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.