https://doi.org/10.1140/epjc/s10052-015-3508-4
Regular Article - Theoretical Physics
The renormalizable three-term polynomial inflation with large tensor-to-scalar ratio
1
State Key Laboratory of Theoretical Physics and Kavli Institute for Theoretical Physics China (KITPC), Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
2
School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu, 610054, People’s Republic of China
3
Center for Theoretical Physics, College of Physical Science and Technology, Sichuan University, Chengdu, 610064, People’s Republic of China
* e-mail: wulina@std.uestc.edu.cn
Received:
22
September
2014
Accepted:
8
June
2015
Published online:
1
July
2015
We systematically study the renormalizable three-term polynomial inflation in the supersymmetric and non-supersymmetric models. The supersymmetric inflaton potentials can be realized in supergravity theory, and only have two independent parameters. We show that the general renormalizable supergravity model is equivalent to one kind of our supersymmetric models. We find that the spectral index and tensor-to-scalar ratio can be consistent with the Planck and BICEP2 results, but the running of spectral index is always out of the 
range. If we do not consider the BICEP2 experiment, these inflationary models can be highly consistent with the Planck observations and saturate its upper bound on the tensor-to-scalar ratio (
). Thus, our models can be tested at the future Planck and QUBIC experiments.
© SIF and Springer-Verlag Berlin Heidelberg, 2015
