Quasi-stationary distribution for continuous-state branching processes with competition

Pei-Sen Li, Jian Wang and Xiaowen Zhou

Stochastic Processes and their Applications, 2024, vol. 177, issue C

Abstract: We study quasi-stationary distribution of the continuous-state branching process with competition introduced by Berestycki et al. (2018). This process is defined as the unique strong solution to a stochastic integral equation with jumps. An important example is the logistic branching process proposed by Lambert (2005). We establish the strong Feller property, trajectory Feller property, Lyapunov condition, weak Feller property and irreducibility, respectively. These properties together allow us to prove that if the competition is strong enough near +∞, then there is a unique quasi-stationary distribution, which attracts all initial distributions with exponential rates.

Keywords: Continuous-state branching process; Competition; Strong feller property; Irreducibility; Quasi-stationary distribution (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1016/j.spa.2024.104457

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