Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of Planck 2015 Data
Joint Authors
Rashidi, Narges
Nozari, Kourosh
Source
Advances in High Energy Physics
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-04-21
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
We study the dynamics of a generalized inflationary model in which both the scalar field and its derivatives are coupled with the gravity.
We consider a general form of the nonminimal derivative coupling in order to have a complete treatment of the model.
By expanding the action up to the second order in perturbation, we study the spectrum of the primordial modes of the perturbations.
Also, by expanding the action up to the third order and considering the three-point correlation functions, the amplitude of the non-Gaussianity of the primordial perturbations is studied in both equilateral and orthogonal configurations.
Finally, by adopting some sort of potentials, we compare the model in hand with the Planck 2015 released observational data and obtain some constraints on the model’s parameters space.
As an important result, we show that the nonminimal couplings help to make models of chaotic inflation that would otherwise be in tension with Planck data, in better agreement with the data.
This model is consistent with observation at weak coupling limit.
American Psychological Association (APA)
Nozari, Kourosh& Rashidi, Narges. 2016. Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of Planck 2015 Data. Advances in High Energy Physics،Vol. 2016, no. 2016, pp.1-16.
https://search.emarefa.net/detail/BIM-1095127
Modern Language Association (MLA)
Nozari, Kourosh& Rashidi, Narges. Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of Planck 2015 Data. Advances in High Energy Physics No. 2016 (2016), pp.1-16.
https://search.emarefa.net/detail/BIM-1095127
American Medical Association (AMA)
Nozari, Kourosh& Rashidi, Narges. Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of Planck 2015 Data. Advances in High Energy Physics. 2016. Vol. 2016, no. 2016, pp.1-16.
https://search.emarefa.net/detail/BIM-1095127
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1095127