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A local time curiosity in random environment

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  • Shi, Zhan

Abstract

In random environments, the most elementary processes are Sinai's simple random walk and Brox's diffusion process, respectively in discrete and continuous time settings. The two processes are often considered as a kind of companions, somewhat in the same way as the usual random walk and Brownian motion are. In this paper, we study the maximum local times for the Sinai and Brox processes. A somewhat peculiar asymptotic behaviour is observed.

Suggested Citation

  • Shi, Zhan, 1998. "A local time curiosity in random environment," Stochastic Processes and their Applications, Elsevier, vol. 76(2), pages 231-250, August.
    • Handle: RePEc:eee:spapps:v:76:y:1998:i:2:p:231-250
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    References listed on IDEAS

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    1. Csörgo, Miklós & Horváth, Lajos & Révész, Pál, 1987. "Stability and instability of local time of random walk in random environment," Stochastic Processes and their Applications, Elsevier, vol. 25, pages 185-202.
    2. Kesten, Harry, 1986. "The limit distribution of Sinai's random walk in random environment," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 138(1), pages 299-309.
    3. Mathieu, Pierre, 1998. "On random perturbations of dynamical systems and diffusions with a Brownian potential in dimension one," Stochastic Processes and their Applications, Elsevier, vol. 77(1), pages 53-67, September.
    4. Bertoin, Jean, 1993. "Splitting at the infimum and excursions in half-lines for random walks and Lévy processes," Stochastic Processes and their Applications, Elsevier, vol. 47(1), pages 17-35, August.
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    Cited by:

    1. Gutierrez-Pavón, Jonathan & Pacheco, Carlos G., 2022. "Quenched distributions for the maximum, minimum and local time of the Brox diffusion," Statistics & Probability Letters, Elsevier, vol. 180(C).
    2. Grégoire Véchambre, 2023. "Almost Sure Behavior for the Local Time of a Diffusion in a Spectrally Negative Lévy Environment," Journal of Theoretical Probability, Springer, vol. 36(2), pages 876-925, June.
    3. Andreoletti, Pierre, 2006. "On the concentration of Sinai's walk," Stochastic Processes and their Applications, Elsevier, vol. 116(10), pages 1377-1408, October.
    4. Pierre Andreoletti & Roland Diel, 2011. "Limit Law of the Local Time for Brox’s Diffusion," Journal of Theoretical Probability, Springer, vol. 24(3), pages 634-656, September.
    5. Diel, Roland, 2011. "Almost sure asymptotics for the local time of a diffusion in Brownian environment," Stochastic Processes and their Applications, Elsevier, vol. 121(10), pages 2303-2330, October.
    6. Hu, Yueyun, 2000. "Tightness of localization and return time in random environment," Stochastic Processes and their Applications, Elsevier, vol. 86(1), pages 81-101, March.
    7. 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.
    8. Gutierrez-Pavón, Jonathan & Pacheco, Carlos G., 2020. "A density for the local time of the Brox diffusion," Statistics & Probability Letters, Elsevier, vol. 163(C).
    9. 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.
    10. Hu, Yaozhong & Lê, Khoa & Mytnik, Leonid, 2017. "Stochastic differential equation for Brox diffusion," Stochastic Processes and their Applications, Elsevier, vol. 127(7), pages 2281-2315.
    11. 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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