期刊
ASTROPHYSICS AND SPACE SCIENCE
卷 326, 期 1, 页码 53-60出版社
SPRINGER
DOI: 10.1007/s10509-009-0207-3
关键词
Chameleon field; Slow-roll parameters; Acceleration
In this work, we have considered a model of the flat Friedmann-Robertson-Walker (FRW) Universe filled with cold dark matter and a chameleon field where the scale function is taken as (i) intermediate expansion and (ii) logamediate expansion. In both cases we find the expressions of the chameleon field, chameleon potential, statefinder parameters, and slow-roll parameters. Also, it has been shown that the potential always decreases with the chameleon field in both scenarios. The nature of the slow-roll parameters has been shown diagrammatically.
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