Little inflatons and gauge inflation

@article{Kaplan2003LittleIA,
  title={Little inflatons and gauge inflation},
  author={David Elazzar Kaplan and Neal Weiner},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2003},
  volume={2004},
  pages={005-005}
}
  • D. Kaplan, N. Weiner
  • Published 4 February 2003
  • Physics
  • Journal of Cosmology and Astroparticle Physics
Cosmological inflation gives a natural answer for a variety of cosmological questions, including the horizon problem, the flatness problem, and others. However, inflation yields new questions relating to the flatness of the inflaton potential. Recent studies of `little' fields, a special class of pseudo-Goldstone bosons, have shown it is possible to protect the mass of a field while still yielding order-one interactions with other fields. In this paper, we will show that `little inflatons' are… 
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References

SHOWING 1-10 OF 59 REFERENCES
Supernatural inflation: inflation from supersymmetry with no (very) small parameters
Abstract Most models of inflation have small parameters, either to guarantee sufficient inflation or the correct magnitude of the density perturbations. In this paper we show that, in supersymmetric
supersymmetry in a hybrid inflation model
Abstract The slow roll inflation requires an extremely flat inflaton potential. The supersymmetry (SUSY) is not only motivated from the gauge hierarchy problem, but also from stabilizing that
Natural double inflation in supergravity
We propose a natural double inflation model in supergravity. In this model, chaotic inflation first takes place by virtue of the Nambu-Goldstone-like shift symmetry, which guarantees the absence of
The Minimal Moose for a Little Higgs
Recently a new class of theories of electroweak symmetry breaking have been constructed. These models, based on deconstruction and the physics of theory space, provide the first alternative to
D-term inflation
Abstract We show that inflation which is dominated by the D-term density avoids the ‘slow-roll’ problem of inflation in supergravity. Such an inflationary scenario can naturally emerge in theories
False vacuum inflation with Einstein gravity.
TLDR
Investigation of chaotic inflation models with two scalar fields, such that one field (the inflaton) rolls while the other is trapped in a false vacuum state, finds that false vacuum inflation occurs with the inflaton field far below the Planck scale, making it easier to implement in the context of supergravity than standard chaotic inflation.
Inflationary universe: A possible solution to the horizon and flatness problems
The standard model of hot big-bang cosmology requires initial conditions which are problematic in two ways: (1) The early universe is assumed to be highly homogeneous, in spite of the fact that
Gauged supergravities, de Sitter space and cosmology
We have studied scalar potentials V of gauged N=8,4,2 supergravities in d=4. Extrema of these potentials may correspond to de Sitter, anti de Sitter and Minkowski vacua. We have found that all known
Natural inflation with pseudo Nambu-Goldstone bosons.
We show that a pseudo-Nambu-Goldstone boson, with a potential of the form V(d) = A’[1 f cos(+/f)], can naturally give rise to an epoch of infiation in the early universe. Successful inflation can be
Natural Supergravity Inflation
Abstract We identify a new mechanism in supergravity theories which leads to successful inflation without any need for fine-tuning. The simplest model yields a spectrum of density fluctuations tilted
...
1
2
3
4
5
...