Аннотация
Optimal paths play a fundamental role in numerous physical applications
ranging from random polymers to brittle fracture, from the flow through
porous media to information propagation. Here for the first time we
explore the path that is activated once this optimal path fails and what
happens when this new path also fails and so on, until the system is
completely disconnected. In fact many applications can also be found for
this novel fracture problem. In the limit of strong disorder, our
results show that all the cracks are located on a single self-similar
connected line of fractal dimension D(b)approximate to 1.22. For weak
disorder, the number of cracks spreads all over the entire network
before global connectivity is lost. Strikingly, the disconnecting path
(backbone) is, however, completely independent on the disorder.
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