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arXiv 1406.6971math.PR
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边界外分支随机游动的最小值

The minimum of a branching random walk outside the boundary case

Julien Barral, Yueyun Hu, Thomas Madaule

摘要:

本文是对实值分枝随机游动极小值研究的补充。在边界情况下(Biggins,Kyprianou 2005),Aïdékon在一篇开创性的论文(2013)中获得了在适当的重整化之后的最小值律收敛。本文研究了分支随机游动的对数母函数在某个正点爆炸且不能归约到边界情形的情形。在相关的热力学框架中,这对应于一阶相变,而边界情况对应于二阶相变。

英文摘要:

This paper is a complement to the studies on the minimum of a real-valued branching random walk. In the boundary case (Biggins, Kyprianou 2005), Aïdékon in a seminal paper (2013) obtained the convergence in law of the minimum after a suitable renormalization. We study here the situation when the log-generating function of the branching random walk explodes at some positive point and it cannot be reduced to the boundary case. In the associated thermodynamics framework this corresponds to a first order phase transition, while the boundary case corresponds to a second order phase transition.

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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