Issue |
EPL
Volume 139, Number 1, July 2022
|
|
---|---|---|
Article Number | 19001 | |
Number of page(s) | 6 | |
Section | Gravitation, cosmology and astrophysics | |
DOI | https://doi.org/10.1209/0295-5075/ac74de | |
Published online | 07 July 2022 |
Constant-roll inflation from a fermionic field
1 Department of Physics, Campus of Bijar, University of Kurdistan - Bijar, Iran
2 School of Physics, Damghan University - P. O. Box 3671641167, Damghan, Iran
3 Department of Physics, University of Mazandaran - P. O. Box 47416-95447, Babolsar, Iran
(a) mehdishokriphysics@gmail.com (corresponding author)
(b) pouriya@ipm.ir
(c) rezakord@ipm.ir
Received: 1 April 2022
Accepted: 31 May 2022
We study the inflationary period driven by a fermionic field which is non-minimally coupled to gravity in the context of the constant-roll approach. We consider the model for a specific form of coupling and perform the corresponding inflationary analysis. By comparing the result with the Planck observations coming from CMB anisotropies, we find the observational constraints on the parameters space of the model and also the predictions of the model. We find that the values of r and ns for are in good agreement with the observations when
and N = 60.
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