Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating

Byrnes C (2009)
JCAP 2009(01): 011.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
We analyse models of inflation in which isocurvature perturbations presentduring inflation are converted into the primordial curvature perturbationduring instant preheating. This can be due to an asymmetry between the fieldspresent either during inflation or during preheating. We consider all theconstraints that the model must satisfy in order to be theoretically valid andto satisfy observations. We show that the constraints are very tight in all ofthe models proposed and special initial conditions are required for the modelsto work. In the case where the symmetry is strongly broken during inflation thenon-Gaussianity parameter f_NL is generally large and negative.
Erscheinungsjahr
2009
Zeitschriftentitel
JCAP
Band
2009
Ausgabe
01
Seite(n)
011
ISSN
1475-7516
eISSN
1475-7516
Page URI
https://pub.uni-bielefeld.de/record/2316852

Zitieren

Byrnes C. Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating. JCAP. 2009;2009(01):011.
Byrnes, C. (2009). Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating. JCAP, 2009(01), 011. https://doi.org/10.1088/1475-7516/2009/01/011
Byrnes, Christian. 2009. “Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating”. JCAP 2009 (01): 011.
Byrnes, C. (2009). Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating. JCAP 2009, 011.
Byrnes, C., 2009. Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating. JCAP, 2009(01), p 011.
C. Byrnes, “Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating”, JCAP, vol. 2009, 2009, pp. 011.
Byrnes, C.: Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating. JCAP. 2009, 011 (2009).
Byrnes, Christian. “Constraints on generating the primordial curvature perturbation and non-Gaussianity from instant preheating”. JCAP 2009.01 (2009): 011.
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