On the sign of the dilaton in the soft wall models

Details On the sign of the dilaton in the soft wall models On the sign of the dilaton in the soft wall models

2010-12-21

arxiv.org/abs/1012.4813v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages

Scientific paper

We elaborate on the existence of a spurious massless scalar mode in the vector channel of soft-wall models with incorrectly chosen sign of the exponential profile defining the wall. We re-iterate the point made in our earlier paper and demonstrate that the presence of the mode is robust, depending only on the infra-red asymptotics of the wall. We also re-emphasize that desired confinement properties can be realized with the correct sign choice.

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