Unconditional uniqueness in the charge class for the Dirac-Klein-Gordon equations in two space dimensions

Details Unconditional uniqueness in the charge class for the Dirac-Klein-Gordon equations in two space dimensions Unconditional uniqueness in the charge class for the Dirac-Klein-Gordon equations in two space dimensions

2011-09-23

arxiv.org/abs/1109.5021v1

Mathematics

Analysis of PDEs

10 pages

Scientific paper

Recently, A. Gruenrock and H. Pecher proved global well-posedness of the 2d Dirac-Klein-Gordon equations given initial data for the spinor and scalar fields in $H^s$ and $H^{s+1/2} \times H^{s-1/2}$, respectively, where $s\ge 0$, but uniqueness was only known in a contraction space of Bourgain type, strictly smaller than the natural solution space $C([0,T]; H^s \times H^{s+1/2} \times H^{s-1/2})$. Here we prove uniqueness in the latter space for $s \ge 0$. This improves a recent result of H. Pecher, where the range $s>1/30$ was covered.

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