Scalar perturbation in warm tachyon inflation in LQC in light of Plank and BICEP2

@article{Setare2014ScalarPI,
  title={Scalar perturbation in warm tachyon inflation in LQC in light of Plank and BICEP2},
  author={M. R. Setare and Vahid Kamali},
  journal={Physics Letters B},
  year={2014},
  volume={739},
  pages={68-73}
}
Abstract We study warm-tachyon inflationary universe model in the context of the effective field theory of loop quantum cosmology. In slow-roll approximation the primordial perturbation spectrums for this model are calculated. We also obtain the general expressions of the tensor-to-scalar ratio and scalar spectral index. We develop this model by using exponential potential, the characteristics of this model are presented in great details. The parameters of the model are restricted by recent… 
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References

SHOWING 1-10 OF 61 REFERENCES
Tachyon warm-intermediate inflationary universe model in high dissipative regime
We consider tachyonic warm-inflationary models in the context of intermediate inflation. We derive the characteristics of this model in slow-roll approximation and develop our model in two cases, 1-
General dissipative coefficient in warm intermediate inflation in loop quantum cosmology in light of Planck and BICEP2
In this paper, we study a warm intermediate inflationary model with a general form for the dissipative coefficient Γ(T, ϕ) = CϕTm/ϕm-1 in the context of Loop Quantum Cosmology (LQC). We examine this
Warm tachyonic inflation in warped background
We analyze warm tachyonic inflation, proposed in the literature, but from the viewpoint of four dimensional effective action for tachyon field on a non-BPS D3-brane. We find that consistency with
Tachyon warm inflationary universe models
Warm inflationary universe models in a tachyon field theory are studied. General conditions required for these models to be realizable are derived and discussed. We describe scalar perturbations (in
Inflation from a tachyon fluid
Motivated by recent works of Sen [hep-th/0203211, hep-th/0203265] and Gibbons [hep-th/0204008], we study the evolution of a flat and homogeneous universe dominated by tachyon matter. In particular,
Aspects of Tachyonic inflation with exponential potential
We consider issues related to tachyonic inflation with an exponential potential. We find an exact solution of the evolution equations in the slow roll limit in FRW cosmology. We also carry out a
Cosmological evolution of the rolling tachyon
Abstract The cosmological effects of the tachyon rolling down to its ground state are discussed by coupling a simple effective field theory for the tachyon field to Einstein gravity. As the tachyon
Scalar perturbation spectra from warm inflation
We present a numerical integration of the cosmological scalar perturbation equations in warm inflation. The initial conditions are provided by a discussion of the thermal fluctuations of an inflaton
Density perturbations in warm inflation and COBE normalization
Starting from a gauge invariant treatment of perturbations an analytical expression for the spectrum of long wavelength density perturbations in warm inflation is derived. The adiabatic and entropy
Observational implications of mattergenesis during inflation
The observed baryon asymmetry, as well as potentially an asymmetry in the dark matter sector, can be produced through dissipative particle production during inflation. A distinctive feature of this
...
1
2
3
4
5
...