Anisotropic Contact Processes on Homogeneous Trees
نویسندگان
چکیده
Sufficient conditions for the existence of a weak survival phase are given for an anisotropic contact process on a homogeneous tree. These require that the contact process be homogeneous, that is, for any two vertices x, y of the tree there is an automorphism mapping x to y leaving the infection rates invariant; and that the contact process be weakly symmetric, that is, for each vertex there should be at least two incident edges with the same infection rate.
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