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arXiv · 2108.12152

Domain Wall AdS/QCD

Nick Evans·Jack Mitchell
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Abstract

We construct a new holographic description of QCD using domain wall fermions. The construction consists of probe D7 branes in a D5 brane geometry describing quarks on a 4+1d defect in a 5+1d gauge theory. We then compactify one dimension of the D5 to introduce confinement in the gauge degrees of freedom. In addition we allow a spatial dependent mass term for the D7 brane quarks to isolate chiral fermions on 3+1d domain walls. The D7 world volume fields, when restricted to the domain wall position, provide an AdS/QCD description. We compute the spectrum and compare to data. We include higher dimension operators to systematically improve the description.

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Nick Evans, Jack Mitchell. 2021-08-27. Domain Wall AdS/QCD. https://doi.org/10.1103/physrevd.104.094018

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