Kalb-Ramond excitations in a thick-brane scenario with dilaton

Details Kalb-Ramond excitations in a thick-brane scenario with dilaton Kalb-Ramond excitations in a thick-brane scenario with dilaton

2012-03-09

arxiv.org/abs/1203.2172v2

Eur. Phys. J. C (2012) 72:1942

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, 13 figures, and 2 tables. Final version to appear in The European Physical Journal C

Scientific paper

10.1140/epjc/s10052-012-1942-0

We compute the full spectrum and eigenstates of the Kalb-Ramond field in a warped non-compact Randall-Sundrum -type five-dimensional spacetime in which the ordinary four-dimensional braneworld is represented by a sine-Gordon soliton. This 3-brane solution is fully consistent with both the warped gravitational field and bulk dilaton configurations. In such a background we embed a bulk antisymmetric tensor field and obtain, after reduction, an infinite tower of normalizable Kaluza-Klein massive components along with a zero-mode. The low lying mass eigenstates of the Kalb-Ramond field may be related to the axion pseudoscalar. This yields phenomenological implications on the space of parameters, particularly on the dilaton coupling constant. Both analytical and numerical results are given.

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