Work

Tachyon constant-roll inflation in Randall–Sundrum II cosmology

Year: 2023

Type: article

Abstract: We study inflation in a model with constant second slow-roll parameter [Formula: see text]. In this case, the Hubble expansion rate equation has analytical solutions describing four possible, nontrivial inflation scenarios. The evolution of the inflaton governed by a tachyon field is studied in the framework of the standard and Randall–Sundrum II cosmology. The attractor behavior of the solution is briefly demonstrated. Finally, the calculated values of the parameters [Formula: see text] and [Formula: see text] are compared with observational data.

Source: International Journal of Modern Physics A

DOI: 10.1142/s0217751x23430030

Authors: Marko Stojanovic, Neven Bilić, Dragoljub D. Dimitrijevic, Goran S. Djordjevic, Milan Milosevic

Institutions: University of Nis, Ruđer Bošković Institute

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Abdus Salam International Centre for Theoretical Physics, CEEPUS

Award: G9000271133