A Soft-Wall Dilaton
arXiv:1411.1732 · doi:10.1007/JHEP02(2015)006
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. Instead, by considering a generalised analytic scalar bulk potential that quickly transitions at the condensate scale from a walking coupling in the UV to an order-one -function in the IR, we obtain a naturally light dilaton. This provides a simple example for obtaining a naturally light dilaton from nearly-marginal CFT deformations in the more realistic case of a soft-wall background.
23 pages, 8 figures; v2: version published in JHEP
References in corpus (17)
- Modulus Stabilization with Bulk Fields
- AdS/CFT Correspondence and Symmetry Breaking
- Modeling the fifth dimension with scalars and gravity
- On the Holographic Renormalization Group
- Comments on the Holographic Picture of the Randall-Sundrum Model
- Multi-Trace Deformations in AdS/CFT: Exploring the Vacuum Structure of the Deformed CFT
- A Higgslike Dilaton
- Effective Theory of a Light Dilaton
- A Naturally Light Dilaton and a Small Cosmological Constant
- A naturally light dilaton
- Soft-Wall Stabilization
- Exact identification of the radion and its coupling to the observable sector
- Naturally light dilatons from nearly marginal deformations
- On massless 4D Gravitons from 5D Asymptotically AdS Space-times
- A Note on the Holographic Beta and C Functions
- Domain walls of D=5 supergravity and fixed points of N=1 Super Yang Mills
- Stability analysis of 5D gravitational solutions with N bulk scalar fields
Cited by in corpus (13)
- Goldstones in Diphotons
- A Perturbative RS I Cosmological Phase Transition
- On dilatons and the LHC diphoton excess
- A light dilaton at the LHC
- Interactions of a Stabilized Radion and Duality
- Holographic light dilaton at the conformal edge
- On light dilaton extensions of the Standard Model
- Anatomy of new SUSY breaking holographic RG flows
- A holographic realization of light dilatons
- Implications of diphoton searches for a Radion in the Bulk-Higgs Scenario
- Marginal Breaking of Conformal SUSY QCD
- A new way of calculating the effective potential for a light radion
- Holographic Schwinger Effect In a Step Dilaton Background