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arXiv 0810.5662math.PRmath-phmath.MP
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相对论性扩散的路径方法

A pathwise approach to relativistic diffusions

Ismael Bailleul

摘要:

最近,C。Chevalier和F. Debbasch,无论是在启发式和分析的方式。在洛伦兹几何的一般框架中,本文提出了这些过程的一种路径方法。在考虑强因果时空中随机运动的动力学时,我们能够给出与这类过程中的每一个过程相关联的单粒子分布函数的简单定义,并证明其基本性质。这一结果不仅提供了一个动力学的理由的分析方法发展到现在(使我们能够恢复到目前为止获得的许多结果),但它提供了一个新的一般H-定理。它也揭示了一些光的重要性的大规模结构的流形的渐近行为的弗朗基-勒扬过程。这种路径方法也是许多没有分析对应物的有趣问题的来源。

英文摘要:

A new class of relativistic diffusions encompassing all the previously studied examples has recently been introduced by C. Chevalier and F. Debbasch, both in a heuristic and analytic way. A pathwise approach of these processes is proposed here, in the general framework of Lorentzian geometry. In considering the dynamics of the random motion in strongly causal spacetimes, we are able to give a simple definition of the one-particle distribution function associated with each process of the class and prove its fundamental property. This result not only provides a dynamical justification of the analytical approach developped up to now (enabling us to recover many of the results obtained so far), but it provides a new general H-theorem. It also sheds some light on the importance of the large scale structure of the manifold in the asymptotic behaviour of the Franchi-Le Jan process. This pathwise approach is also the source of many interesting questions that have no analytical counterparts.

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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