Abstract
Effect of linear chirp frequency on the process of electron–positron pairs production from vacuum is investigated by the computational quantum field theory. With appropriate chirp parameters, the number of electrons created under combined potential wells can be increased by two or three times. In the low frequency region, frequency modulation excites interference effect and multiphoton processes, which promotes the generation of electron–positron pairs. In the high frequency region, high frequency suppression inhibits the generation of electron–positron pairs. In addition, for a single potential well, the number of created electron–positron pairs can be enhanced by several orders of magnitude in the low frequency region.
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