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Upper limits of Sinai's walk in random scenery

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  • Zindy, Olivier

Abstract

We consider Sinai's walk in i.i.d. random scenery and focus our attention on a conjecture of Révész concerning the upper limits of Sinai's walk in random scenery when the scenery is bounded from above. A close study of the competition between the concentration property for Sinai's walk and negative values for the scenery enables us to prove that the conjecture is true if the scenery has "thin" negative tails and is false otherwise.

Suggested Citation

  • Zindy, Olivier, 2008. "Upper limits of Sinai's walk in random scenery," Stochastic Processes and their Applications, Elsevier, vol. 118(6), pages 981-1003, June.
    • Handle: RePEc:eee:spapps:v:118:y:2008:i:6:p:981-1003
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    References listed on IDEAS

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    1. Andreoletti, Pierre, 2007. "Almost sure estimates for the concentration neighborhood of Sinai's walk," Stochastic Processes and their Applications, Elsevier, vol. 117(10), pages 1473-1490, October.
    2. Shi, Zhan, 1998. "A local time curiosity in random environment," Stochastic Processes and their Applications, Elsevier, vol. 76(2), pages 231-250, August.
    3. Gantert, Nina & Shi, Zhan, 2002. "Many visits to a single site by a transient random walk in random environment," Stochastic Processes and their Applications, Elsevier, vol. 99(2), pages 159-176, June.
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