Stochastic epidemic-type model with enhanced connectivity: exact solution

Details Stochastic epidemic-type model with enhanced connectivity: exact solution Stochastic epidemic-type model with enhanced connectivity: exact solution

2011-08-25

arxiv.org/abs/1108.5135v2

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

We present an exact analytical solution to a one-dimensional model of the Susceptible-Infected-Recovered (SIR) epidemic type, with infection rates dependent on nearest-neighbor occupations. We use a quantum mechanical approach, transforming the master equation via a quantum spin operator formulation. We calculate exactly the time-dependent density of infected, recovered and susceptible populations for random initial conditions, and compare our results with a low connectivity SIR model reported by Schuetz et al.. Our results compare well to those of previous work, validating the model as a useful tool for additional and extended studies in this important area. Our model also provides exact solutions for the n-point correlation functions, and can be extended to more complex epidemic type models.

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