Inflation models and observation
By Laila Alabidi, D. Lyth. 2005
151 citations recorded by the source corpus.
We consider small-field models, which invoke the usual framework for the effective field theory, and large-field models, which go beyond this. Present and future possibilities for discriminating between the models are assessed, on the assumption that the primordial curvature perturbation is generated during inflation. With PLANCK data, the theoretical and observational uncertainties on the spectral index will be comparable, providing useful discrimination between small-field models. Further discrimination between models may come later through the tensor fraction, the running of the spectral index and non-Gaussianity.
Subfields: Astronomy and Astrophysics, Mechanical Engineering, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/957bcdebd065c50690554a7a013f91aaf97e23c0
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Citations in the corpus
- Inflation and String Theory (2014, background): “58) are irrelevant when the pivot scale exits the horizon, then the spectral tilt and the tensor-to-scalar ratio are [215,216]”
- Non-linear isocurvature perturbations and non-Gaussianities (2008, methodology): “The adiabatic curvature perturbations generated by this model have been computed in [11, 38, 39] and their non-Gaussianity in [40, 41, 42] (see also [43]).”
- Non-Gaussianities in multi-field inflation (2006, background): “It is not yet known whether the microscopic physics of string theory will permit N-flation to naturally arise in a realistic 3 See also [8] for the derivation of a closely related assisted inflation model based on multiple branes, to which our study also applies.”
- Inflationary trispectrum from graviton exchange (2008, background): “Indeed, several authors [23, 5, 24] have used a momentum dependent τNL alone to parametrize the full trispectrum.”
- Random matrices and the spectrum of N-flation (2005, background): “First, what are the dynamics and the observational predictions of an N-flation model with a given set of masses mi?”
- Cosmology and Fundamental Physics with the Euclid Satellite (2012, background): “In this case, the overall expansion of the universe is affected by each of the field while it is in slow-roll; thus, the final non-Gaussianity is slow-roll suppressed, as in single field inflation (Rigopoulos et al. 2006; Alabidi and Lyth 2006; Vernizzi and Wands 2006).”
- Punctuated inflation and the low CMB multipoles (2008, result): “The dynamics and the inflationary predictions in such examples are surprisingly similar to the corresponding single field chaotic inflation models [62–64], due to the assisted inflation mechanism [65].”