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(self organized criticality) 
(\propto) 

==Static versus dynamic properties==
The above examples exclusively refer to the static properties of a critical system. However dynamic properties of the system may become critical, too. Especially, the characteristic time, <math>\tau_{\mathrm{char}}</math>, of a system diverges as <math>\tau_{\mathrm{char}}
The critical exponents can be computed from [[conformal field theory]].

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