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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>1</mml:mn><mml:mo>โ</mml:mo><mml:mi>f</mml:mi></mml:mrow></mml:math>noise and avalanche scaling in plastic deformation
We study the intermittency and noise of dislocation systems undergoing shear deformation. Simulations of a simple two-dimensional discrete dislocation dynamics model indicate that the deformation rate exhibits a power spectrum scaling of the type $1โ{f}^{\ensuremath{\alpha}}$. The noise exponent is far away from a Lorentzian, with $\ensuremath{\alpha}\ensuremath{\approx}1.5$. This result is directly โฆ