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arXiv 1206.3772gr-qc
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静自力正则化

Regularization of static self-forces

Marc Casals, Eric Poisson, Ian Vega

摘要:

各种正则化方法已经被用来计算作用在静态弯曲时空中的静态粒子上的自作用力。其中许多是基于阿达玛的两点函数在三维空间。另一方面,正则化方法,享有最好的理由是,Detweiler和Whiting,这是基于一个四维格林函数。我们建立了这些方法之间的联系,并发现它们都是等价的,因为它们都导致相同的静态自作用力。对于一般的静态时空,我们计算各种正则化方法的基础上的格林函数的局部展开。我们发现,这些同意到一定的高阶,并推测,他们可能是平等的所有订单。我们表明,这种等价是精确的情况下,超静态时空。最后,我们的计算被用来提供一个静态粒子在一般静态和球对称时空的正则化参数。

英文摘要:

Various regularization methods have been used to compute the self-force acting on a static particle in a static, curved spacetime. Many of these are based on Hadamard's two-point function in three dimensions. On the other hand, the regularization method that enjoys the best justification is that of Detweiler and Whiting, which is based on a four-dimensional Green's function. We establish the connection between these methods and find that they are all equivalent, in the sense that they all lead to the same static self-force. For general static spacetimes, we compute local expansions of the Green's functions on which the various regularization methods are based. We find that these agree up to a certain high order, and conjecture that they might be equal to all orders. We show that this equivalence is exact in the case of ultrastatic spacetimes. Finally, our computations are exploited to provide regularization parameters for a static particle in a general static and spherically-symmetric 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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