TY  - JOUR
PY  - 2013//
TI  - Evolution of the average avalanche shape with the universality class
JO  - Nature communications
A1  - Laurson, Lasse
A1  - Illa, Xavier
A1  - Santucci, Stéphane
A1  - Tore Tallakstad, Ken
A1  - Måløy, Knut Jørgen
A1  - Alava, Mikko J.
SP  - 2927
EP  - 2927
VL  - 4
IS  - 
N2  - A multitude of systems ranging from the Barkhausen effect in ferromagnetic materials to plastic deformation and earthquakes respond to slow external driving by exhibiting intermittent, scale-free avalanche dynamics or crackling noise. The avalanches are power-law distributed in size, and have a typical average shape: these are the two most important signatures of avalanching systems. Here we show how the average avalanche shape evolves with the universality class of the avalanche dynamics by employing a combination of scaling theory, extensive numerical simulations and data from crack propagation experiments. It follows a simple scaling form parameterized by two numbers, the scaling exponent relating the average avalanche size to its duration and a parameter characterizing the temporal asymmetry of the avalanches. The latter reflects a broken time-reversal symmetry in the avalanche dynamics, emerging from the local nature of the interaction kernel mediating the avalanche dynamics.<p />  <p>Language: en</p>
LA  - en
SN  - 2041-1723
UR  - http://dx.doi.org/10.1038/ncomms3927
ID  - ref1
ER  -