September 29, 2009
Put yer nerd goggles on
It's early enough in the morning, I'm betting very few of you are too drunk to understand this, unless you're still recovering from last night.
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The survival probability of immobile targets annihilated by a population of random walkers on inhomogeneous discrete structures, such as disordered solids, glasses, fractals, polymer networks, and gels, is analytically investigated. It is shown that, while it cannot in general be related to the number of distinct visited points as in the case of homogeneous lattices, in the case of bounded coordination numbers its asymptotic behavior at large times can still be expressed in terms of the spectral dimensionIf you are too drunk, here's a simpler explanation.and its exact analytical expression is given. The results show that the asymptotic survival probability is site-independent of recurrent structures (
2), while on transient structures (
>2) it can strongly depend on the target position, and such dependence is explicitly calculated.
Posted by: Alice H at
09:01 AM
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