Higher-spin fields in braneworlds
Abstract
The dynamics of higher-spin fields in braneworlds is discussed. In particular, we study fermionic and bosonic higher-spin fields in AdS and their localization on branes. We find that four-dimensional zero modes exist only for spin-one fields, if there are no couplings to the boundaries. If boundary couplings are allowed, as in the case of the bulk graviton, all bosons acquire a zero mode irrespective of their spin. We show that there are boundary conditions for fermions, which generate chiral zero modes in the four-dimensional spectrum. We also propose a gauge invariant on-shell action with cubic interactions by adding non-minimal couplings, which depend on the Weyl tensor. In addition, consistent couplings between higher-spin fields and matter on the brane are presented. Finally, in the AdS/CFT correspondence, where bulk 5D theories on AdS are related to 4D CFTs, we explicitly discuss the holographic picture of higher-spin theories in AdS with and without boundaries.
- Publication:
-
Nuclear Physics B
- Pub Date:
- October 2005
- DOI:
- arXiv:
- arXiv:hep-th/0411269
- Bibcode:
- 2005NuPhB.725...15G
- Keywords:
-
- 04.50.+h;
- 11.90.+t;
- 11.25.Tq;
- 04.62.+v;
- Gravity in more than four dimensions Kaluza-Klein theory unified field theories;
- alternative theories of gravity;
- Other topics in general theory of fields and particles;
- Gauge/string duality;
- Quantum field theory in curved spacetime;
- High Energy Physics - Theory;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology
- E-Print:
- 26 pages, 2 figures, Revtex style. v2 references added and a sign in the bosonic action corrected
