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Chain Inflation Reconsidered · Around

2011

Chain Inflation Reconsidered

Cline, James M., Moore, Guy D., Wang, Yi

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We investigate density perturbations in the chain inflation scenario, where the inflaton undergoes successive tunneling transitions along one field direction.

First we show that when the bubble walls associated with such a phase transition meet, they induce the next phase transition and continue to propagate as phase interfaces.
Then we present an analytical calculation of the density fluctuations and an estimate of non-Gaussianities such as f_{NL}, which we find to be small (of order 1).
To get the right amplitude for the power spectrum, there have to be 10^8 phase transitions per Hubble time, a significant model building challenge.

Built on

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1977
Earlier work this paper cites.
C. G. Callan, Jr., S. R. Coleman, “The Fate of the False Vacuum. 2. First Quantum Corrections,” Phys. Rev. D16
1977
Earlier work this paper cites.
S. R. Coleman, F. De Luccia, “Gravitational Effects on and of Vacuum Decay,” Phys. Rev. D21
1980
Earlier work this paper cites.
A. H. Guth, “The Inflationary Universe: A Possible Solution to the Horizon and Flatness Problems,” Phys. Rev. D 23
1981
Earlier work this paper cites.
E. Komatsu, D. N. Spergel, “Acoustic signatures in the primary microwave background bispectrum,” Phys. Rev. D63
2001
Earlier work this paper cites.
K. Freese, D. Spolyar, “Chain inflation: ’Bubble bubble toil and trouble’,” JCAP 0507
2005
Earlier work this paper cites.

Similar

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A. R. Brown, S. Sarangi, B. Shlaer, A. Weltman, “A Wrinkle in Coleman-De Luccia,” Phys. Rev. Lett. 99
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D. Chialva, U. H. Danielsson, “Chain inflation revisited,” JCAP 0810
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Then

D. Chialva, U. H. Danielsson, “Chain inflation and the imprint of fundamental physics in the CMBR,” JCAP 0903
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2009
Later among the works it cites.
A. Ashoorioon, K. Freese and J. T. Liu, “Slow nucleation rates in Chain Inflation with QCD Axions or Monodromy,” Phys. Rev. D 79
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2009
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R. Easther, J. T. Giblin, L. Hui and E. A. Lim, “A New Mechanism for Bubble Nucleation: Classical Transitions,” Phys. Rev. D 80
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2010
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C. Lin, Y. Wang, “Quadra-Spectrum and Quint-Spectrum from Inflation and Curvaton Models,” JCAP 1007
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E. Komatsu et al
Original

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