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P. Creminelli and M. Zaldarriaga, “Single field consistency relation for the 3-point function,” JCAP
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Then

M. M. Anber and L. Sorbo, “Non-Gaussianities and chiral gravitational waves in natural steep inflation,” Phys. Rev. D
Original
2012
Later among the works it cites.
L. Senatore, E. Silverstein, and M. Zaldarriaga, “New Sources of Gravitational Waves during Inflation,” JCAP
Original
2014
Later among the works it cites.
V. Assassi, D. Baumann, D. Green, and L. McAllister, “Planck-Suppressed Operators,” JCAP
Original
2014
Later among the works it cites.
P. Adshead and E. I. Sfakianakis, “Fermion production during and after axion inflation,” JCAP
Original
2015
Later among the works it cites.
M. Mirbabayi, L. Senatore, E. Silverstein, and M. Zaldarriaga, “Gravitational Waves and the Scale of Inflation,” Phys. Rev. D

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2023

Dissipative Inflation via Scalar Production

Creminelli, Paolo, Kumar, Soubhik, Salehian, Borna et al.

Understand

We describe a new mechanism that gives rise to dissipation during cosmic inflation.

In the simplest implementation, the mechanism requires the presence of a massive scalar field with a softly-broken global $U(1)$ symmetry, along with the inflaton field.
Particle production in this scenario takes place on parametrically sub-horizon scales, at variance with the case of dissipation into gauge fields.
Consequently, the backreaction of the produced particles on the inflationary dynamics can be treated in a \textit{local} manner, allowing us to compute their effects analytically.

Built on

S. Weinberg, “Eikonal Method in Magnetohydrodynamics,” Phys. Rev
1909
Earlier work this paper cites.
K. V. Berghaus, P. W. Graham, and D. E. Kaplan, “Minimal Warm Inflation,” JCAP
Original
1910
Earlier work this paper cites.
Butterworth-Heinemann, Oxford, 1991
L. D. Landau and E. M. Lifshits, Quantum Mechanics: Non-Relativistic Theory · 1991
Earlier work this paper cites.
A. Berera, “Warm inflation,” Phys. Rev. Lett
1995
Earlier work this paper cites.
D. H. Lyth, “What would we learn by detecting a gravitational wave signal in the cosmic microwave background anisotropy?,” Phys. Rev. Lett
1997
Earlier work this paper cites.
E. Castorina et al
Original
2002
Earlier work this paper cites.
V. Domcke, V. Guidetti, Y. Welling, and A. Westphal, “Resonant backreaction in axion inflation,” JCAP
Original
2002
Earlier work this paper cites.
D. H. Lyth, C. Ungarelli, and D. Wands, “The Primordial density perturbation in the curvaton scenario,” Phys. Rev. D
2003
Earlier work this paper cites.
J. M. Maldacena, “Non-Gaussian features of primordial fluctuations in single field inflationary models,” JHEP
2003
Earlier work this paper cites.
G. Dvali, A. Gruzinov, and M. Zaldarriaga, “A new mechanism for generating density perturbations from inflation,” Phys. Rev. D
2004
Earlier work this paper cites.
P. Creminelli and M. Zaldarriaga, “Single field consistency relation for the 3-point function,” JCAP
2004
Earlier work this paper cites.
J. F. Dufaux, G. N. Felder, L. Kofman, M. Peloso, and D. Podolsky, “Preheating with trilinear interactions: Tachyonic resonance,” JCAP
2006
Earlier work this paper cites.