Estudio del número de pares creados por un campo eléctrico*

Abstract

In this work we study the number of produced pairs in an electric field using the semiclassical aproach. We see that the stochastic process $N(t)$=``net number of produced pairs at time $t$'', is an stochastic Poisson process with expected value $(\x \mathcal E(t))/(64 mc^2)$, where $\x$ is the fine structure constant and ${\mathcal E}(t)$ is the energy of the electric field at time $t$.