3 papers
math.PR2025
A pursuit problem for squared Bessel processes
Christophe Profeta
In this note, we are interested in the probability that two independent squared Bessel processes do not cross for a long time. We show that this probability has a power decay which…
math.PR2025
Total progeny for spectrally negative branching L{é}vy processes with absorption
Christophe Profeta
We consider a spectrally negative branching L{é}vy process in which particles are killed upon crossing below zero. It is known that such a process becomes extinct almost surely if…
math.PR2025
On the maximal displacement of some critical branching L{é}vy processes with stable offspring distribution
Christophe Profeta
Let X be a critical branching L{é}vy process whose offspring distribution is in the domain of attraction of a stable random variable. We study the tail probability of the maximum…