2010

Curvature Perturbations and non-Gaussianities from Waterfall Phase Transition during Inflation

Abolhasani, Ali Akbar, Firouzjahi, Hassan, Namjoo, Mohammad Hossein

Understand

We consider a variant of hybrid inflation where the waterfall phase transition happens during inflation.

By adjusting the parameters associated with the mass of the waterfall field we arrange that the phase transition is not sharp so inflation can proceed for about 50-60 e-folds after the waterfall phase transition.
We show that one can work in the limit where the quantum back-reactions are subdominant compared to the classical back-reactions.
It is shown that significant amount of large scale curvature perturbations are induced from the entropy perturbations.

Built on

D. Battefeld, T. Battefeld and A. C. Davis, “Staggered Multi-Field Inflation,” JCAP 0810
Original
1953
Earlier work this paper cites.
T. Suyama, T. Takahashi, M. Yamaguchi and S. Yokoyama, “On Classification of Models of Large Local-Type Non-Gaussianity,” arXiv:1009.1979 [astro-ph.CO]
Original
1979
Earlier work this paper cites.
A. H. Guth, “The Inflationary Universe: A Possible Solution To The Horizon And Flatness Problems,” Phys. Rev. D 23
1982
Earlier work this paper cites.
A. A. Starobinsky, “Multicomponent de Sitter (Inflationary) Stages and the Generation of Perturbations,” JETP Lett. 42
1985
Earlier work this paper cites.
Y. Nambu and M. Sasaki, “Purely quantum derivation of density fluctuations in the inflationary universe,” Prog. Theor. Phys. 83
1990
Earlier work this paper cites.
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.
A. D. Linde, “Hybrid inflation,” Phys. Rev. D 49
1994
Earlier work this paper cites.
E. J. Copeland, A. R. Liddle, D. H. Lyth, E. D. Stewart and D. Wands, “False vacuum inflation with Einstein gravity,” Phys. Rev. D 49
1994
Earlier work this paper cites.
J. Garcia-Bellido, A. D. Linde, D. Wands, “Density perturbations and black hole formation in hybrid inflation,” Phys. Rev. D54
1996
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,” Prog. Theor. Phys. 95
1996
Earlier work this paper cites.
M. Sasaki and T. Tanaka, “Super-horizon scale dynamics of multi-scalar inflation,” Prog. Theor. Phys. 99
1998
Earlier work this paper cites.
A. Taruya and Y. Nambu, “Cosmological perturbation with two scalar fields in reheating after inflation,” Phys. Lett. B 428
2000
Earlier work this paper cites.
D. Wands, K. A. Malik, D. H. Lyth and A. R. Liddle, “A new approach to the evolution of cosmological perturbations on large scales,” Phys. Rev. D 62
2000
Earlier work this paper cites.
J. A. Adams, B. Cresswell and R. Easther, “Inflationary perturbations from a potential with a step,” Phys. Rev. D 64
2001
Earlier work this paper cites.
C. Gordon, D. Wands, B. A. Bassett and R. Maartens, “Adiabatic and entropy perturbations from inflation,” Phys. Rev. D 63
2001
Earlier work this paper cites.
N. Barnaby and J. M. Cline, “Nongaussianity from Tachyonic Preheating in Hybrid Inflation,” Phys. Rev. D 75
Original
2005
Earlier work this paper cites.

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Then

G. N. Felder, J. Garcia-Bellido, P. B. Greene et al
Original
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Original
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D. Wands, “Local non-Gaussianity from inflation,” Class. Quant. Grav. 27
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K. Koyama, “Non-Gaussianity of quantum fields during inflation,” Class. Quant. Grav. 27
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