Extracting new inflation model from the most general scalar-tensor theory. (January 2019)

• Record Type: Journal Article
• Authors: Hikmawan, Getbogi; Suroso, Agus; Zen, Freddy P.
• Is Part Of: Journal of physics. Volume 1127(2018)
• Publication Date: 2019-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1127/1/012007
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: Inflation is now the strongest scenario to be the candidate of early universe. Until recently, there are many models tried to give explanation about this phenomenon, one of them is called Horndeski theory, the most general scalar-tensor theory. In this paper, we investigate the no-ghost and Laplacian stability conditions for scalar and tensor perturbation for Horndeski theory, and obtains exactly the same conditions as the actual stability conditions from some particular gravity-coupled scalar field cosmological model. Therefore, there are big possibility to using the conditions obtained to become a constraint for extracting the new cosmological model for inflation scenario.