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Stable limits for sums of dependent infinite variance random variables

15 June 2009
K. Bartkiewicz
Adam Jakubowski
T. Mikosch
Olivier Wintenberger
ArXiv (abs)PDFHTML
Abstract

The aim of this paper is to provide conditions which ensure that the affinely transformed partial sums of a strictly stationary process converge in distribution to an infinite variance stable distribution. Conditions for this convergence to hold are known in the literature. However, most of these results are qualitative in the sense that the parameters of the limit distribution are ex- pressed in terms of some limiting point process. In this paper we will be able to determine the parameters of the limiting stable distribution in terms of some tail characteristics of the underlying stationary sequence. We will apply our results to some standard time series models, including the GARCH(1, 1) pro- cess and its squares, the stochastic volatility models and solutions to stochastic recurrence equations.

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