Conditions for large non-Gaussianity in two-field slow-roll inflation

Byrnes C, Choi K-Y, Hall LMH (2008)
JCAP 2008(10): 8.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
DOI
Autor*in
Byrnes, ChristianUniBi; Choi, Ki-Young; Hall, Lisa M. H.
Einrichtung
Fakultät für Physik > AG Astroteilchen und Kosmologie
Abstract / Bemerkung
We study the level of primordial non-Gaussianity in slow-roll two-fieldinflation. Using an analytic formula for the nonlinear parameter f_nl in thecase of a sum or product separable potential, we find that it is possible togenerate significant non-Gaussianity even during slow-roll inflation withGaussian perturbations at Hubble exit. In this paper we give the generalconditions to obtain large non-Gaussianity and calculate the level offine-tuning required to obtain this. We present explicit models in which thenon-Gaussianity at the end of inflation can exceed the current observationalbound of |f_nl|<100.
Erscheinungsjahr
2008
Zeitschriftentitel
JCAP
Band
2008
Ausgabe
10
Art.-Nr.
8
ISSN
1475-7516
Page URI
https://pub.uni-bielefeld.de/record/2316859

Zitieren

Byrnes C, Choi K-Y, Hall LMH. Conditions for large non-Gaussianity in two-field slow-roll inflation. JCAP. 2008;2008(10): 8.
Byrnes, C., Choi, K. - Y., & Hall, L. M. H. (2008). Conditions for large non-Gaussianity in two-field slow-roll inflation. JCAP, 2008(10), 8. https://doi.org/10.1088/1475-7516/2008/10/008
Byrnes, Christian, Choi, Ki-Young, and Hall, Lisa M. H. 2008. “Conditions for large non-Gaussianity in two-field slow-roll inflation”. JCAP 2008 (10): 8.
Byrnes, C., Choi, K. - Y., and Hall, L. M. H. (2008). Conditions for large non-Gaussianity in two-field slow-roll inflation. JCAP 2008:8.
Byrnes, C., Choi, K.-Y., & Hall, L.M.H., 2008. Conditions for large non-Gaussianity in two-field slow-roll inflation. JCAP, 2008(10): 8.
C. Byrnes, K.-Y. Choi, and L.M.H. Hall, “Conditions for large non-Gaussianity in two-field slow-roll inflation”, JCAP, vol. 2008, 2008, : 8.
Byrnes, C., Choi, K.-Y., Hall, L.M.H.: Conditions for large non-Gaussianity in two-field slow-roll inflation. JCAP. 2008, : 8 (2008).
Byrnes, Christian, Choi, Ki-Young, and Hall, Lisa M. H. “Conditions for large non-Gaussianity in two-field slow-roll inflation”. JCAP 2008.10 (2008): 8.
Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®
Quellen

arXiv: 0807.1101

Inspire: 790119

Suchen in

Google Scholar