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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2003.14351astro-ph.COgr-qc
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参数化暗能量的类孪星模型

Twinlike models for parametrized dark energy

J. D. Dantas, J. J. Rodrigues

摘要:

我们研究了包含一个实标量场的宇宙学模型,该场具有随宇宙时间演化的状态参数方程。我们强调了一些常见的参数化的状态方程作为红移的函数的背景下的孪生理论。这个过程被用来介绍不同的模型,具有相同的加速参数,具有非常相同的能量密度和压力在平坦的时空。

英文摘要:

We study cosmological models involving a single real scalar field that has an equation of state parameter which evolves with cosmic time. We highlight some common parametrizations for the equation of state as a function of redshift in the context of twinlike theories. The procedure is used to introduce different models that have the same acceleration parameter, with the very same energy densities and pressure in flat spacetime.

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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