A new look at duality for the symbiotic branching model

@article{Hammer2018ANL,
  title={A new look at duality for the symbiotic branching model},
  author={Matthias Hammer and Marcel Ortgiese and Florian Vollering},
  journal={The Annals of Probability},
  year={2018}
}
The symbiotic branching model is a spatial population model describing the dynamics of two interacting types that can only branch if both types are present. A classical result for the underlying stochastic partial differential equation identifies moments of the solution via a duality to a system of Brownian motions with dynamically changing colors. In this paper, we revisit this duality and give it a new interpretation. This new approach allows us to extend the duality to the limit as the… 

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