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arXiv · 2505.24488

Relative-phase dependence of dynamically assisted electron-positron pair creation in the superposition of strong oscillating electric-field pulses

J. Braß·D. M. Müller·S. Villalba-Chávez·K. Krajewska·C. Müller
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Abstract

Production of electron-positron pairs in the superposition of oscillating electric-field pulses with largely different frequencies is studied, focussing on the impact of relative phases between the pulses. Various field configurations are considered: superpositions of either two or three pulses of equal duration as well as combinations of a long low-frequency and a short high-frequency pulse. We show that the relative phase of superimposed high-frequency modes can exert a sizeable effect on the total numbers of produced pairs, enhancing them by about 10-30% for the considered field parameters.

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J. Braß, D. M. Müller, S. Villalba-Chávez, K. Krajewska, C. Müller. 2025-05-30. Relative-phase dependence of dynamically assisted electron-positron pair creation in the superposition of strong oscillating electric-field pulses. https://arxiv.org/abs/2505.24488

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