Journal article
A soft-wall dilaton
P Cox, T Gherghetta
Journal of High Energy Physics | Published : 2015
Open access
Abstract
Abstract: We study the properties of the dilaton in a soft-wall background using two solutions of the Einstein equations. These solutions contain an asymptotically AdS metric with a nontrivial scalar profile that causes both the spontaneous breaking of conformal invariance and the generation of a mass gap in the particle spectrum. We first present an analytic solution, using the superpotential method, that describes a CFT spontaneously broken by a finite dimensional operator in which a light dilaton mode appears in the spectrum. This represents a tuning in the vanishing of the quartic coupling in the effective potential that could be naturally realised from an underlying supersymmetry. Inste..
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Awarded by Australian Research Council
Funding Acknowledgements
We thank Alex Pomarol for helpful discussions. This work was supported by the Australian Research Council. TG was also supported by the Department of Energy grant DE-SC0011842 at the University of Minnesota. TG thanks the hospitality of the Aspen Center for Physics and the partial support from National Science Foundation Grant No. PHYS-1066293 where part of this work was done. PC is grateful to the School of Physics and Astronomy at the University of Minnesota for its hospitality during the completion of this work.