Editing Autocorrelation
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A different definition of the decay time would be the time integral | A different definition of the decay time would be the time integral | ||
of <math>c(t)</math>: | of <math>c(t)</math>: | ||
:<math>\tau'=\int_0^\infty c(t) \, | :<math>\tau'=\int_0^\infty c(t) \,dt ,</math> | ||
which coincides with the previous one if the decay is purely exponential. Since | which coincides with the previous one if the decay is purely exponential. Since | ||
this is not the case at short times, the two times will be similar but | this is not the case at short times, the two times will be similar but |