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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2001.01903gr-qc
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尘埃云坍缩的哈密顿表述

Hamiltonian formulation of dust cloud collapse

Nick Kwidzinski, Daniele Malafarina, Jan Ostrowski, Włodzimierz Piechocki, Tim Schmitz

摘要:

本文在哈密顿形式下研究了自引力球形尘埃云的引力坍缩。我们处理均匀和非均匀的情况下。我们的新推导系统的哈密顿量是基于改进的变分原理,提出了\cite{KMM}。本推导不同于通常的治疗,由于存在一个额外的边界项添加到希尔伯特作用。正如预期的那样,标准的运动方程检索。然而,与其他处理方法不同的是,在史瓦西时间规范中用我们的方法得到的总哈密顿量与从无穷远处测量的系统的总质量相同,正如预期的那样。建议的量化系统的影响。

英文摘要:

We consider the gravitational collapse of self-gravitating spherical dust cloud in the Hamiltonian formalism. We address both homogeneous and inhomogeneous cases. Our novel derivation of the Hamiltonian of the system is based on the improved variational principle that was proposed in \cite{KMM}. The present derivation differs from usual treatments due to the presence of an extra boundary term added to the Hilbert action. As expected, the standard equations of motion are retrieved. However, differently from other treatments, the total Hamiltonian obtained with our procedure in the Schwarzschild time-gauge is identical to the total mass of the system as measured from infinity, as it would be expected. Implications for the quantization of the system are suggested.

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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