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arXiv 2409.01110gr-qc
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存在物质与标量场时球对称引力坍缩的终态平衡态

End equilibrium state of a spherical gravitational collapse in the presence of matter and scalar field

Debanjan Debnath, Dipanjan Dey, Kaushik Bhattacharya

AI总结:

本文研究由暗物质与代表暗能量的非均匀标量场组成的复合流体能否作为球对称引力坍缩终态静态时空的种子,并推导出JMN时空中标量场与势的解,证明该双组分流体可形成最终平衡态。

摘要:

我们探索了模拟球对称静态时空的可能性,该时空可以作为引力坍缩的终态出现,并考虑其由物质和标量场组成的复合流体所孕育。在这一情景中,物质代表暗物质,而标量场代表暗能量。在某些尺度上,暗能量被认为会显著影响暗物质的结构形成。各种模型描述了在不同情景下暗能量对结构形成的可能影响。通过研究一个代表暗能量的非均匀标量场,并与暗物质耦合,我们证明了这种双组分流体可以孕育形成最终平衡态的时空。我们推导出了Joshi-Malafarina-Narayan (JMN)时空中标量场及其势的解。

英文摘要:

We explore the possibilities of modeling a spherically symmetric static spacetime that can emerge as the end state of gravitational collapse, by considering it to be seeded by a composite fluid made of matter and a scalar field. In this scenario, the matter represents dark matter, while the scalar field represents dark energy. On certain scales, dark energy is believed to significantly influence the structure formation of dark matter. Various models describe the possible impacts of dark energy on structure formation under different scenarios. By investigating an inhomogeneous scalar field representing dark energy, coupled with dark matter, we demonstrate that this two-component fluid can seed spacetimes forming the final equilibrium state. We derive solutions for the scalar field and potential for Joshi-Malafarina-Narayan (JMN) spacetimes.

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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