2024 : 5 : 19
Khaled Saaidi

Khaled Saaidi

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 4567832
Faculty: Faculty of Science
Address: Department of Physics, Faculty of Science, University of Kurdistan, Pasdaran Street, Sanandaj, Kurdistan, Iran. 2th Address: Science and Technology Park of Kurdistan, Buo Ali Boolvar, Ghane Square, Baharan Town , Sanandaj, Kurdistan, Iran.
Phone: 08733776900

Research

Title
( Non-)geodesic motion in chameleon Brans Dicke model
Type
JournalPaper
Keywords
Non-minimal coupling, Brans-Dicke model, Geodesic motion
Year
2013
Journal ASTROPHYSICS AND SPACE SCIENCE
DOI
Researchers Khaled Saaidi

Abstract

Based on Das and Banerjee (Phys. Rev D 78:043512, 2008), we assume there is a non-minimal coupling between scalar field and matter in the Brans-Dicke model. We analyzes the motion of different matter such as, massless scalar field, photon, massless perfect fluid (dust), massive perfect fluid and point particle matter in this study. We show that the motion of massless scalar field and photon can satisfy null geodesic motion only in high frequency limit. Also we find that the motion of the dust and massive perfect fluid is geodesic for Lm = −P and it is non-geodesic for Lm = ρ. Finally, we study the motion of point particle and show that the motion of this kind of matter is like massive perfect fluid.