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Models of plastic depinning of driven disordered systems | | M. Cristina Marchetti
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28 Mar 2005 | | Journal: | Pramana 64, 1097 (2005) | | Subject: | Soft Condensed Matter; Disordered Systems and Neural Networks | cond-mat.soft cond-mat.dis-nn | | Abstract: | Two classes of models of driven disordered systems that exhibit history-dependent dynamics are discussed. The first class incorporates local inertia in the dynamics via nonmonotonic stress transfer between adjacent degrees of freedom. The second class allows for proliferation of topological defects due to the interplay of strong disorder and drive. In mean field theory both models exhibit a tricritical point as a function of disorder strength. At weak disorder depinning is continuous and the sliding state is unique. At strong disorder depinning is discontinuous and hysteretic. | | Source: | arXiv, cond-mat/0503639 | | Services: | Forum | Review | PDF | Favorites | |
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