Built on

D. Hooper, G. Krnjaic, and S. D. McDermott, Dark Radiation and Superheavy Dark Matter from Black Hole Domination
Original
1905
Earlier work this paper cites.
V. Domcke, B. von Harling, E. Morgante, and K. Mukaida, Baryogenesis from axion inflation
Original
1905
Earlier work this paper cites.
O. O. Sobol, E. V. Gorbar, and S. I. Vilchinskii, Backreaction of electromagnetic fields and the Schwinger effect in pseudoscalar inflation magnetogenesis
Original
1907
Earlier work this paper cites.
A. Kalaja, N. Bellomo, N. Bartolo, D. Bertacca, S. Matarrese, I. Musco, A. Raccanelli, and L. Verde, From Primordial Black Holes Abundance to Primordial Curvature Power Spectrum (and back)
Original
1908
Earlier work this paper cites.
P. Adshead, J. T. Giblin, M. Pieroni, and Z. J. Weiner, Constraining axion inflation with gravitational waves from preheating
Original
1909
Earlier work this paper cites.
V. Domcke, Y. Ema, and K. Mukaida, Chiral Anomaly, Schwinger Effect, Euler-Heisenberg Lagrangian, and application to axion inflation
Original
1910
Earlier work this paper cites.
M. Ballardini, M. Braglia, F. Finelli, G. Marozzi, and A. A. Starobinsky, Energy-momentum tensor and helicity for gauge fields coupled to a pseudoscalar inflaton
Original
1910
Earlier work this paper cites.
J. C. Aurrekoetxea, K. Clough, R. Flauger, and E. A. Lim, The Effects of Potential Shape on Inhomogenous Inflation
Original
1910
Earlier work this paper cites.
V. Gorbenko and L. Senatore, λ ϕ 4 \lambda\phi^{4} in dS
Original
1911
Earlier work this paper cites.
N. Fonseca, E. Morgante, R. Sato, and G. Servant, Relaxion Fluctuations (Self-stopping Relaxion) and Overview of Relaxion Stopping Mechanisms
Original
1911
Earlier work this paper cites.
G. Dall’Agata, S. González-Martín, A. Papageorgiou, and M. Peloso, Warm dark energy
Original
1912
Earlier work this paper cites.
A. A. Starobinsky, Multicomponent de Sitter (Inflationary) Stages and the Generation of Perturbations
1985
Earlier work this paper cites.
M. S. Turner and L. M. Widrow, Gravitational Production of Scalar Particles in Inflationary Universe Models
1988
Earlier work this paper cites.
K. Freese, J. A. Frieman, and A. V. Olinto, Natural inflation with pseudo - Nambu-Goldstone bosons
1990
Earlier work this paper cites.
D. S. Salopek and J. R. Bond, Nonlinear evolution of long wavelength metric fluctuations in inflationary models
1990
Earlier work this paper cites.
W. D. Garretson, G. B. Field, and S. M. Carroll, Primordial magnetic fields from pseudoGoldstone bosons
1992
Earlier work this paper cites.
M. Sasaki and E. D. Stewart, A General analytic formula for the spectral index of the density perturbations produced during inflation
1996
Earlier work this paper cites.
T. Banks, M. Dine, P. J. Fox, and E. Gorbatov, On the possibility of large axion decay constants
2003
Earlier work this paper cites.
A. M. Green, A. R. Liddle, K. A. Malik, and M. Sasaki, A New calculation of the mass fraction of primordial black holes
2004
Earlier work this paper cites.
S. Mollerach, D. Harari, and S. Matarrese, CMB polarization from secondary vector and tensor modes
2004
Earlier work this paper cites.

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P. Svrcek and E. Witten, Axions In String Theory
2006
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2006
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S. Yokoyama, T. Suyama, and T. Tanaka, Primordial Non-Gaussianity in Multi-Scalar Slow-Roll Inflation
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K. N. Ananda, C. Clarkson, and D. Wands, The Cosmological gravitational wave background from primordial density perturbations
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2007
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Then

A. Notari and K. Tywoniuk, Dissipative Axial Inflation
Original
2016
Later among the works it cites.
R. Z. Ferreira, J. Ganc, J. Noreña, and M. S. Sloth, On the validity of the perturbative description of axions during inflation
Original
2016
Later among the works it cites.
M. Peloso, L. Sorbo, and C. Unal, Rolling axions during inflation: perturbativity and signatures
Original
2016
Later among the works it cites.
M. Kleban and L. Senatore, Inhomogeneous Anisotropic Cosmology
Original
2016
Later among the works it cites.
B. Carr, F. Kuhnel, and M. Sandstad, Primordial Black Holes as Dark Matter
Original

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2020

Resonant backreaction in axion inflation

Domcke, Valerie, Guidetti, Veronica, Welling, Yvette et al.

Understand

Axion inflation entails a coupling of the inflaton field to gauge fields through the Chern-Simons term.

This results in a strong gauge field production during inflation, which backreacts on the inflaton equation of motion.
Here we show that this strongly non-linear system generically experiences a resonant enhancement of the gauge field production, resulting in oscillatory features in the inflaton velocity as well as in the gauge field spectrum.
The gauge fields source a strongly enhanced scalar power spectrum at small scales, exceeding previous estimates.

Built on

D. Hooper, G. Krnjaic, and S. D. McDermott, Dark Radiation and Superheavy Dark Matter from Black Hole Domination
Original
1905
Earlier work this paper cites.
V. Domcke, B. von Harling, E. Morgante, and K. Mukaida, Baryogenesis from axion inflation
Original
1905
Earlier work this paper cites.
O. O. Sobol, E. V. Gorbar, and S. I. Vilchinskii, Backreaction of electromagnetic fields and the Schwinger effect in pseudoscalar inflation magnetogenesis
Original
1907
Earlier work this paper cites.
A. Kalaja, N. Bellomo, N. Bartolo, D. Bertacca, S. Matarrese, I. Musco, A. Raccanelli, and L. Verde, From Primordial Black Holes Abundance to Primordial Curvature Power Spectrum (and back)
Original
1908
Earlier work this paper cites.
P. Adshead, J. T. Giblin, M. Pieroni, and Z. J. Weiner, Constraining axion inflation with gravitational waves from preheating
Original
1909
Earlier work this paper cites.
V. Domcke, Y. Ema, and K. Mukaida, Chiral Anomaly, Schwinger Effect, Euler-Heisenberg Lagrangian, and application to axion inflation
Original
1910
Earlier work this paper cites.
M. Ballardini, M. Braglia, F. Finelli, G. Marozzi, and A. A. Starobinsky, Energy-momentum tensor and helicity for gauge fields coupled to a pseudoscalar inflaton
Original
1910
Earlier work this paper cites.
J. C. Aurrekoetxea, K. Clough, R. Flauger, and E. A. Lim, The Effects of Potential Shape on Inhomogenous Inflation
Original
1910
Earlier work this paper cites.
V. Gorbenko and L. Senatore, λ ϕ 4 \lambda\phi^{4} in dS
Original
1911
Earlier work this paper cites.
N. Fonseca, E. Morgante, R. Sato, and G. Servant, Relaxion Fluctuations (Self-stopping Relaxion) and Overview of Relaxion Stopping Mechanisms
Original
1911
Earlier work this paper cites.
G. Dall’Agata, S. González-Martín, A. Papageorgiou, and M. Peloso, Warm dark energy
Original
1912
Earlier work this paper cites.
A. A. Starobinsky, Multicomponent de Sitter (Inflationary) Stages and the Generation of Perturbations
1985
Earlier work this paper cites.
M. S. Turner and L. M. Widrow, Gravitational Production of Scalar Particles in Inflationary Universe Models
1988
Earlier work this paper cites.
K. Freese, J. A. Frieman, and A. V. Olinto, Natural inflation with pseudo - Nambu-Goldstone bosons
1990
Earlier work this paper cites.
D. S. Salopek and J. R. Bond, Nonlinear evolution of long wavelength metric fluctuations in inflationary models
1990
Earlier work this paper cites.
W. D. Garretson, G. B. Field, and S. M. Carroll, Primordial magnetic fields from pseudoGoldstone bosons
1992
Earlier work this paper cites.
M. Sasaki and E. D. Stewart, A General analytic formula for the spectral index of the density perturbations produced during inflation
1996
Earlier work this paper cites.
T. Banks, M. Dine, P. J. Fox, and E. Gorbatov, On the possibility of large axion decay constants
2003
Earlier work this paper cites.
A. M. Green, A. R. Liddle, K. A. Malik, and M. Sasaki, A New calculation of the mass fraction of primordial black holes
2004
Earlier work this paper cites.
S. Mollerach, D. Harari, and S. Matarrese, CMB polarization from secondary vector and tensor modes
2004
Earlier work this paper cites.

Similar

P. Svrcek and E. Witten, Axions In String Theory
2006
Cited alongside, same era.
M. M. Anber and L. Sorbo, N-flationary magnetic fields
2006
Cited alongside, same era.
S. Yokoyama, T. Suyama, and T. Tanaka, Primordial Non-Gaussianity in Multi-Scalar Slow-Roll Inflation
Original
2007
Cited alongside, same era.
K. N. Ananda, C. Clarkson, and D. Wands, The Cosmological gravitational wave background from primordial density perturbations
2007
Cited alongside, same era.
D. Baumann, P. J. Steinhardt, K. Takahashi, and K. Ichiki, Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
2007
Cited alongside, same era.
R. Anantua, R. Easther, and J. T. Giblin, GUT-Scale Primordial Black Holes: Consequences and Constraints