General continuum clockwork
Abstract
The continuum clockwork is an extra-dimensional set-up to realize certain features of the clockwork mechanism generating exponentially suppressed or hierarchical couplings of light particles. We study the continuum clockwork in a general scheme in which large volume, warped geometry, and localization of zero modes in extra dimension are described by independent parameters. For this, we propose a generalized 5-dimensional linear dilaton model which can realize such set-up as a solution of the model, and examine the KK spectrum and the couplings of zero modes and massive KK modes to boundary-localized operators for the bulk graviton, Abelian gauge bosons and periodic scalar fields. We discuss how those KK spectra and couplings vary as a function of the volume, warping and localization parameters, and highlight the behavior in the parameter region corresponding to the clockwork limit. We discuss also the field range of 4-dimensional axions originating from either 5-dimensional periodic scalar field or the 5-th component of an Abelian gauge field, and comment on the limitations of continuum clockwork compared to the discrete clockwork.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- July 2018
- DOI:
- 10.1007/JHEP07(2018)113
- arXiv:
- arXiv:1711.06228
- Bibcode:
- 2018JHEP...07..113C
- Keywords:
-
- Field Theories in Higher Dimensions;
- Gauge Symmetry;
- Global Symmetries;
- Space-Time Symmetries;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 41 pages, 5 figures