期刊
CANADIAN JOURNAL OF PHYSICS
卷 97, 期 7, 页码 752-760出版社
CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
DOI: 10.1139/cjp-2018-0487
关键词
modified gravity; equation of state; scale factor; exact solution; FRW universe
The aim of thi s paper is to investigate the field equations of modified f(R, phi) theory of gravity, where R and phi represent the Ricci scalar and scalar potential, respectively. We consider the Friedmann-Robertson-Walker space-time for finding some exact solutions by using different values of equation of state parameter. In this regard, different possibilities of the exact solutions have been discussed for dust universe, radiation universe, ultra-relativistic universe, sub-relativistic universe, stiff universe, and dark energy universe. Mainly power law and exponential forms of the scale factor are chosen for the analysis.
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