Hyperfine Splitting and the Zeeman Effect in Holographic Heavy-Light Mesons

Details Hyperfine Splitting and the Zeeman Effect in Holographic Heavy-Light Mesons Hyperfine Splitting and the Zeeman Effect in Holographic Heavy-Light Mesons

2010-05-18

arxiv.org/abs/1005.3285v1

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, 1 figure

Scientific paper

We inspect the mass spectrum of heavy-light mesons in deformed N=2 super Yang-Mills theory using the AdS/CFT correspondence. We demonstrate how some of the degeneracies of the supersymmetric meson spectrum can be removed upon breaking the supersymmetry, thus leading to the emergence of hyperfine structure. The explicit SUSY breaking scenarios we consider involve on one hand tilting one of the two fundamental D7 branes inside the internal R^6 space, and on the other hand applying an external magnetic field on the (untilted) branes. The latter scenario leads to the well-known Zeeman effect, which we inspect for both weak and strong magnetic fields.

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