TeV Scale Lee-Wick Fields out of Large Extra Dimensional Gravity
Abstract
We study the gravitational corrections to the Maxwell, Dirac and Klein-Gorden theories in the large extra dimension model in which the gravitons propagate in the (4+n)-dimensional bulk, while the gauge and matter fields are confined to the four-dimensional world. The corrections to the two-point Green's functions of the gauge and matter fields from the exchanges of virtual Kaluza-Klein gravitons are calculated in the gauge independent background field method. In the framework of effective field theory, we show that the modified one-loop renormalizable Lagrangian due to quantum gravitational effects contains a TeV scale Lee-Wick partner of every gauge and matter field as extra degrees of freedom in the theory. Thus the large extra dimension model of gravity provides a natural mechanism to the emergence of these exotic particles which were recently used to construct an extension of the Standard Model.
Cite
@article{arxiv.0807.0132,
title = {TeV Scale Lee-Wick Fields out of Large Extra Dimensional Gravity},
author = {Feng Wu and Ming Zhong},
journal= {arXiv preprint arXiv:0807.0132},
year = {2008}
}
Comments
17 pages, 3 figures, references added, to appear in Phys. Rev. D