2009

Trapped Inflation

Green, Daniel, Horn, Bart, Senatore, Leonardo et al.

Understand

We analyze a distinctive mechanism for inflation in which particle production slows down a scalar field on a steep potential, and show how it descends from angular moduli in string compactifications.

The analysis of density perturbations -- taking into account the integrated effect of the produced particles and their quantum fluctuations -- requires somewhat new techniques that we develop.
We then determine the conditions for this effect to produce sixty e-foldings of inflation with the correct amplitude of density perturbations at the Gaussian level, and show that these requirements can be straightforwardly satisfied.
Finally, we estimate the amplitude of the non-Gaussianity in the power spectrum and find a significant equilateral contribution.

Built on

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Similar

P. Creminelli, “On non-gaussianities in single-field inflation,” JCAP 0310
2003
Cited alongside, same era.
E. Silverstein and D. Tong, “Scalar speed limits and cosmology: Acceleration from D-cceleration,” Phys. Rev. D 70
2004
Cited alongside, same era.
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Cited alongside, same era.
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2004
Cited alongside, same era.
R. Brustein, S. P. de Alwis and P. Martens, “Cosmological stabilization of moduli with steep potentials,” Phys. Rev. D 70
2004
Cited alongside, same era.
N. Arkani-Hamed, P. Creminelli, S. Mukohyama and M. Zaldarriaga, “Ghost inflation,” JCAP 0404
2004
Cited alongside, same era.
D. Babich, P. Creminelli and M. Zaldarriaga, “The shape of non-Gaussianities,” JCAP 0408
2004
Cited alongside, same era.
P. Creminelli and M. Zaldarriaga, “Single field consistency relation for the 3-point function,” JCAP 0410
2004
Cited alongside, same era.
V. Balasubramanian, P. Berglund, J. P. Conlon and F. Quevedo, “Systematics of moduli stabilisation in Calabi-Yau flux compactifications,” JHEP 0503
2004
Cited alongside, same era.
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Cited alongside, same era.
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Cited alongside, same era.
A. Berera, I. G. Moss and R. O. Ramos, “Warm Inflation and its Microphysical Basis,” arXiv:0808.1855 [hep-ph]
Original
Cited in the paper.

Then

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Original
2007
Later among the works it cites.
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Later among the works it cites.
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Later among the works it cites.
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2007
Later among the works it cites.
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2007
Later among the works it cites.
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Later among the works it cites.
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2008
Later among the works it cites.
C. Cheung, A. L. Fitzpatrick, J. Kaplan and L. Senatore, “On the consistency relation of the 3-point function in single field inflation,” JCAP 0802
Original
2008
Later among the works it cites.
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2008
Later among the works it cites.
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Original
2008
Later among the works it cites.
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Original
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Later among the works it cites.

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