AdS-sliced flavor branes and adding flavor to the Janus solution

We implement D7 flavor branes in antide Sitter-sliced coordinates on AdS[sub 5] x S[sup 5] with the ansatz that the brane fluctuates only in the warped direction in this slicing, which is particularly appropriate for studying the Janus solution. The natural field theory dual in this slicing is super...

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Veröffentlicht in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2014-01, Vol.89 (2), Article 026014
Hauptverfasser: Clark, Adam B., Crossette, Nathan, Rommal, Andrea, Newman, George M.
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Sprache:eng
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Zusammenfassung:We implement D7 flavor branes in antide Sitter-sliced coordinates on AdS[sub 5] x S[sup 5] with the ansatz that the brane fluctuates only in the warped direction in this slicing, which is particularly appropriate for studying the Janus solution. The natural field theory dual in this slicing is superYang-Mills on two copies of AdS[sub 4]. Branes extending from mu =[+ or -][pie]/2 can end at different locations, giving rise to quarks with a piecewise constant mass on each halfspace, jumping discontinuously between them. Numerical studies indicate that AdS-sliced D7 flavor branes of both classes exhibit spontaneous chiral symmetry breaking, as a nonzero vacuum expectation value persists for solutions of the equation of motion down to zero mass. The behavior of the mass and vacuum expectation value is similar in Janus, including the existence of chiral symmetry breaking at zero mass, though qualitative features of the phase diagram change as the Janus parameter c[sub 0] increases.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.89.026014