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arXiv 1012.1443gr-qc
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变色龙场在加速宇宙中的作用

Role of Chameleon Field in Accelerating Universe

Piyali Bagchi Khatua, Ujjal Debnath

摘要:

本文考虑了一个充满冷暗物质和Chameleon场的平坦FRW宇宙模型,其中尺度函数取为(i)中间膨胀和(ii)对数中间膨胀。在这两种情况下,我们找到了Chameleon场,Chameleon势,statefinder参数和慢滚参数的表达式。此外,它已被证明,在这两种情况下的潜在的是总是减少与变色龙场。慢滚参数的性质已用图解法表示出来。

英文摘要:

In this work, we have considered a model of the flat FRW universe filled with cold dark matter and Chameleon field where the scale function is taken as, (i) Intermediate Expansion and (ii) Logamediate Expansion. In the both cases we find the expressions of Chameleon field, Chameleon potential, statefinder parameters and slow-roll parameters. Also it has been shown that the potential is always decreases with the chameleon field in both the scenarios. The nature of slow-roll parameters have been shown diagrammatically.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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