Abstract
We study particle and chirality production from the vacuum in the presence of a slow strong parallel electromagnetic field superimposed by a fast weak perturbative electromagnetic field. We derive an analytical formula for the particle and chirality production number based on the perturbation theory in the Furry picture. With the formula, we analytically discuss the interplay and dynamical assistance between the Schwinger mechanism and one-photon pair production and clarify effects of a parallel slow strong magnetic field. We also show that the dynamical assistance can significantly enhance chirality production, and that a sizable amount of chirality can be produced even for massive particles. Phenomenological applications including heavy-ion collisions and intense laser experiments are also discussed.
Highlights
One of the most remarkable predictions of quantum electrodynamics (QED) is spontaneous particle production from the vacuum in the presence of a slow strong electromagnetic field
We analytically show that chirality production is related to the lowest Landau level production NLLL and write down a formula for chiral charge produced from the vacuum in the presence of the slow strong parallel electromagnetic field superimposed by a perturbation (19) by using the production number formula derived in Sec
We have studied particle production from the vacuum by a slow strong parallel electromagnetic field superimposed by a fast weak perturbation
Summary
One of the most remarkable predictions of quantum electrodynamics (QED) is spontaneous particle production from the vacuum in the presence of a slow strong electromagnetic field (for review, see Refs. [1,2,3]). Reference [106] investigated the dynamically assisted Schwinger mechanism in the presence of a parallel slow strong electromagnetic field configuration within the worldline instanton formalism just for a slowly varying perturbation (only for which the worldline instanton formalism can be justified) with Sauter-type spacetime dependence, and chirality production was not discussed explicitly. The purpose of the present paper is to discuss effects of a parallel slow strong magnetic field on the dynamically assisted Schwinger mechanism and its impacts on chirality production This shall be achieved in the following manner: In Sec. II, we discuss the number of particles produced from the vacuum by a slow strong parallel electromagnetic field superimposed by a fast weak perturbative electromagnetic field. IV, we summarize our findings and discuss future work and implications for or applications to, e.g., heavy-ion collisions and intense laser experiments
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