Built on

D. S. Salopek and J. R. Bond, “Nonlinear evolution of long wavelength metric fluctuations in inflationary models,” Phys. Rev. D 42
1990
Earlier work this paper cites.
L. Kofman, A. D. Linde and A. A. Starobinsky, “Towards the theory of reheating after inflation,” Phys. Rev. D 56
1997
Earlier work this paper cites.
J. H. Traschen and R. H. Brandenberger, “Particle Production During Out-of-equilibrium Phase Transitions,” Phys. Rev. D 42
2000
Earlier work this paper cites.
M. T. Grisaru, M. Rocek and R. von Unge, “Effective Kahler potentials,” Phys. Lett. B 383
Original
2000
Earlier work this paper cites.
P. Creminelli, “On non-Gaussianities in single-field inflation,” JCAP 0310
2003
Earlier work this paper cites.
L. Kofman, A. D. Linde, X. Liu, A. Maloney, L. McAllister and E. Silverstein, “Beauty is attractive: Moduli trapping at enhanced symmetry points,” JHEP 0405
2004
Earlier work this paper cites.
A. D. Linde and V. F. Mukhanov, “Nongaussian isocurvature perturbations from inflation,” Phys. Rev. D 56
2004
Earlier work this paper cites.
M. Alishahiha, E. Silverstein and D. Tong, “DBI in the sky,” Phys. Rev. D 70
2004
Earlier work this paper cites.
C. Cheung, P. Creminelli, A. L. Fitzpatrick, J. Kaplan and L. Senatore, “The Effective Field Theory of Inflation,” JHEP 0803
Original
2008
Earlier work this paper cites.
D. Babich, P. Creminelli and M. Zaldarriaga, JCAP 0408
Original
2009
Earlier work this paper cites.
D. Green, B. Horn, L. Senatore and E. Silverstein, “Trapped Inflation,” Phys. Rev. D 80
Original
2009
Earlier work this paper cites.
E. Silverstein and A. Westphal, Phys. Rev. D 78
Original
2010
Earlier work this paper cites.

Similar

X. Chen, “Primordial Non-Gaussianities from Inflation Models,” Adv. Astron. 2010
Original
2010
Cited alongside, same era.
N. Kaloper and L. Sorbo, “A Natural Framework for Chaotic Inflation,” Phys. Rev. Lett. 102
Original
2011
Cited alongside, same era.
X. Dong, B. Horn, E. Silverstein and A. Westphal, “Simple exercises to flatten your potential,” Phys. Rev. D 84
Original
2011
Cited alongside, same era.
X. Chen, R. Easther and E. A. Lim, “Large Non-Gaussianities in Single Field Inflation,” JCAP 0706
Original
2011
Cited alongside, same era.
J. L. Cook and L. Sorbo, “Particle production during inflation and gravitational waves detectable by ground-based interferometers,” Phys. Rev. D 85

Then

L. Senatore, E. Silverstein and M. Zaldarriaga, “New Sources of Gravitational Waves during Inflation,” JCAP 1408
Original
2014
Later among the works it cites.
S. R. Behbahani, M. Mirbabayi, L. Senatore and K. M. Smith, “New natural shapes of non-Gaussianity from high-derivative interactions and their optimal limits from WMAP 9-year data,” JCAP 1411
Original
2014
Later among the works it cites.
P. A. R. Ade et al
Original
2015
Later among the works it cites.
P. A. R. Ade et al
Original
2015
Later among the works it cites.
P. A. R. Ade et al
Original
2015

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2016

Productive Interactions: heavy particles and non-Gaussianity

Flauger, Raphael, Mirbabayi, Mehrdad, Senatore, Leonardo et al.

Understand

We analyze the shape and amplitude of oscillatory features in the primordial power spectrum and non-Gaussianity induced by periodic production of heavy degrees of freedom coupled to the inflaton $\phi$.

We find that non-adiabatic production of particles can contribute effects which are detectable or constrainable using cosmological data even if their time-dependent masses are always heavier than the scale $\dot \phi^{1/2}$, much larger than the Hubble scale.
This provides a new role for UV completion, consistent with the criteria from effective field theory for when heavy fields cannot be integrated out.
This analysis is motivated in part by the structure of axion monodromy, and leads to an additional oscillatory signature in a subset of its parameter space.

Built on

D. S. Salopek and J. R. Bond, “Nonlinear evolution of long wavelength metric fluctuations in inflationary models,” Phys. Rev. D 42
1990
Earlier work this paper cites.
L. Kofman, A. D. Linde and A. A. Starobinsky, “Towards the theory of reheating after inflation,” Phys. Rev. D 56
1997
Earlier work this paper cites.
J. H. Traschen and R. H. Brandenberger, “Particle Production During Out-of-equilibrium Phase Transitions,” Phys. Rev. D 42
2000
Earlier work this paper cites.
M. T. Grisaru, M. Rocek and R. von Unge, “Effective Kahler potentials,” Phys. Lett. B 383
Original
2000
Earlier work this paper cites.
P. Creminelli, “On non-Gaussianities in single-field inflation,” JCAP 0310
2003
Earlier work this paper cites.
L. Kofman, A. D. Linde, X. Liu, A. Maloney, L. McAllister and E. Silverstein, “Beauty is attractive: Moduli trapping at enhanced symmetry points,” JHEP 0405
2004
Earlier work this paper cites.
A. D. Linde and V. F. Mukhanov, “Nongaussian isocurvature perturbations from inflation,” Phys. Rev. D 56
2004
Earlier work this paper cites.
M. Alishahiha, E. Silverstein and D. Tong, “DBI in the sky,” Phys. Rev. D 70
2004
Earlier work this paper cites.
C. Cheung, P. Creminelli, A. L. Fitzpatrick, J. Kaplan and L. Senatore, “The Effective Field Theory of Inflation,” JHEP 0803
Original
2008
Earlier work this paper cites.
D. Babich, P. Creminelli and M. Zaldarriaga, JCAP 0408
Original
2009
Earlier work this paper cites.
D. Green, B. Horn, L. Senatore and E. Silverstein, “Trapped Inflation,” Phys. Rev. D 80
Original
2009
Earlier work this paper cites.
E. Silverstein and A. Westphal, Phys. Rev. D 78
Original
2010
Earlier work this paper cites.