Academics

Step-reinforced random walks and one half

Time:Thur., 16:00-17:00, Mar. 6, 2025

Venue:C548, Shuangqing Complex Building A

Speaker:Shuo Qin

Organizers

吴昊,杨帆,姜建平,顾陈琳

Speaker

Shuo Qin 秦硕

BIMSA

Time

Thur., 16:00-17:00, Mar. 6, 2025

Venue

C548, Shuangqing Complex Building A

Step-reinforced random walks and one half

Under suitable moment assumptions, we show that the step-reinforced random walk exhibits a phase transition between recurrence and transience in dimensions one and two, while remaining transient for all parameters in dimensions three and higher. Moreover, we identify the critical parameter 1/2 which is uniform for step-reinforced random walks in all dimensions.

Speaker's personal website:

https://www.bimsa.cn/zh-CN/detail/ShuoQin.html

DATEMarch 5, 2025
SHARE
Related News
    • 0

      Limit sets for branching random walks on relatively hyperbolic groups

      AbstractBranching random walks (BRW) on groups consist of two independent processes on the Cayley graphs: branching and movement. Start with a particle on a favorite location of the graph. According to a given offspring distribution, the particles at the time n split into a random set of particles with mean $r \ge 1$, each of which then moves independently with a fixed step distribution to the ...

    • 1

      YMSC Probability Seminar | Speed of Random Walks in Dirichlet Environment on a Galton-Watson Tree

      Abstract:This paper mainly deals with a transient random walk in Dirichlet Environment, or equivalently a linearly edge reinforced random walk, on a Galton-Watson tree. We compute stationary distributions of the environment seen from the particle in both quenched and annealed cases. With these stationary measures, we provide the almost necessary and sufficient criteria for positive speed and g...