Multiplicity distribution of electron-positron pairs created by strong external fields
- 1 July 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 46 (1) , 261-269
- https://doi.org/10.1103/physreva.46.261
Abstract
We discuss the multiplicity distribution of electron-positron pairs created in the strong electromagnetic fields of ultrarelativistic heavy-ion transits. Based on nonperturbative expressions for the N-pair creation amplitudes, the Poisson distribution is derived by neglecting interference terms. The source of unitarity violation is identified in the vacuum-to-vacuum amplitude, and a perturbative expression for the mean number of pairs is given.Keywords
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