2025/12/5
Khaled Saaidi

Khaled Saaidi

Academic rank: Professor
ORCID:
Education: PhD.
H-Index:
Faculty: Faculty of Science
ScholarId:
E-mail: ksaaidi [at] uok.ac.ir
ScopusId: View
Phone: 08733776900
ResearchGate:

Research

Title
Anisotropic inflation in Brans-Dicke gravity with a non-Abelian gauge field
Type
JournalPaper
Keywords
-
Year
2018
Journal PHYSICAL REVIEW D
DOI
Researchers Mehraneh Tirandari ، Khaled Saaidi ، Abolhassan Mohammadi

Abstract

We study anisotropic inflation in the Brans-Dicke gravity in the presence of a non-Abelian gauge field where the gauge field is nonminimally coupled to the inflaton. We consider the displaced quadratic potential for the inflation. We find out that the solution of equations of motion is an attractor in the phase space. Moreover, anisotropy grows with the number of e-folds. It may become either positive or negative in contradiction to the Abelian gauge field coupling. The anisotropy depends on the Brans-Dicke parameter and constant parameter of the coupling function of the scalar field and the non-Abelian gauge field.