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- W2050493866 abstract "Within a recently developed framework of dynamical Monte Carlo algorithms, we compute the roughness exponent $ensuremath{zeta}$ of driven elastic strings at the depinning threshold in $1+1$ dimensions for different functional forms of the (short-range) elastic energy. A purely harmonic elastic energy leads to an unphysical value for $ensuremath{zeta}$. We include supplementary terms in the elastic energy of at least quartic order in the local extension. We then find a roughness exponent of $ensuremath{zeta}ensuremath{simeq}0.63$, which coincides with the one obtained for different cellular automaton models of directed percolation depinning. We discuss the implications of our analysis for higher-dimensional elastic manifolds in disordered media." @default.
- W2050493866 created "2016-06-24" @default.
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- W2050493866 date "2001-01-01" @default.
- W2050493866 modified "2023-09-25" @default.
- W2050493866 title "Origin of the roughness exponent in elastic strings at the depinning threshold" @default.
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