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Advances in High Energy Physics
Volume 2015, Article ID 926807, 11 pages
http://dx.doi.org/10.1155/2015/926807
Research Article

Light of Planck-2015 on Noncanonical Inflation

1Islamic Azad University, Sanandaj Branch, Pasdaran Street, P.O. Box 618, Sanandaj, Iran
2Young Researchers and Elites Club, Sanandaj Branch, Islamic Azad University, Sanandaj, Iran
3Department of Physics, Faculty of Science, University of Kurdistan, Pasdaran Street, Sanandaj 66177-15175, Iran

Received 6 May 2015; Accepted 24 June 2015

Academic Editor: Rong-Gen Cai

Copyright © 2015 Kh. Saaidi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.

Abstract

Slow-roll inflationary scenario is considered in noncanonical scalar field model supposing a power-law function for kinetic term and using two formalisms. In the first approach, the potential is picked out as a power-law function, that is, the most common approach in studying inflation. Hamilton-Jacobi approach is selected as the second formalism, so that the Hubble parameter is introduced as a function of scalar field instead of the potential. Employing the last observational data, the free parameters of the model are constrained, and the predicted form of the potential and attractor behavior of the model are studied in detail.