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arXiv · 2208.12040

The modified scattering for Dirac equations of scattering-critical nonlinearity

Yonggeun Cho·Soonsik Kwon·Kiyeon Lee·Changhun Yang
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Abstract

In this paper, we consider the Maxwell-Dirac system in 3 dimension under zero magnetic field. We prove the global well-posedness and modified scattering for small solutions in the weighted Sobolev class. Imposing the Lorenz gauge condition, (and taking the Dirac projection operator), it becomes a system of Dirac equations with Hartree type nonlinearity with a long range potential as $|x|^{-1} $. We perform the weighted energy estimates. In this procedure, we have to deal with various resonance functions that stem from the Dirac projections. We use the spacetime resonance argument of Germain-Masmoudi-Shatah, as well as the spinorial null-structure. On the way, we recognize a long range interaction which is responsible for a logarithmic phase correction in the modified scattering statement.

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Yonggeun Cho, Soonsik Kwon, Kiyeon Lee, Changhun Yang. 2022-08-25. The modified scattering for Dirac equations of scattering-critical nonlinearity. https://arxiv.org/abs/2208.12040

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