On the stability of a soft-wall model
arXiv:1008.1632 · doi:10.1103/PhysRevD.82.075009
Abstract
We investigate the stability and fluctuations of a soft wall model that has an asymptotically AdS metric and a scalar field that has an asymptotically power-law dependence in the conformal coordinate. By imposing UV boundary conditions, the soft wall mass scale can be fixed to be near the TeV scale and causes the radion to no longer be massless. A hierarchy between the weak scale and the Planck scale can be generated for various particle spectrum behavior, although natural values only occur for a gravitational sector containing scalar fields that act like unparticles. In addition, if bulk Standard Model fields have nonstandard couplings to the gravitational sector, then a discrete particle spectrum can be realized in the nongravitational sector. This allows for the possibility of an unparticle solution to the hierarchy problem.
17 pages, 1 figure; references added
References in corpus (8)
- Linear Confinement and AdS/QCD
- Electroweak Breaking on a Soft Wall
- Dynamical Soft-Wall AdS/QCD
- The Soft-Wall Standard Model
- Stability of Scalar Fields in Warped Extra Dimensions
- Fermion Mass Hierarchy from the Soft Wall
- Suppressing Lepton Flavour Violation in a Soft-Wall Extra Dimension
- LFV in SUSY Breaking with Heavy Sleptons
Cited by in corpus (10)
- Warped Electroweak Breaking Without Custodial Symmetry
- LHC Signals of Non-Custodial Warped 5D Models
- Flavour Physics in the Soft Wall Model
- Warped Universal Extra Dimensions
- Broken Symmetry as a Stabilizing Remnant
- Flavor-changing decays of the top quark in 5D warped models
- Higgs Production in General 5D Warped Models
- Avoiding the dangers of a soft-wall singularity
- Higgs boson production and decay in 5D warped models
- Constraints on Models with Warped Extra Dimensions