General self-tuning solutions and no-go theorem
High Energy Physics - Theory
2015-06-12 v2 High Energy Physics - Phenomenology
Abstract
We consider brane world models with one extra dimension. In the bulk there is in addition to gravity a three form gauge potential or equivalently a scalar (by generalisation of electric magnetic duality). We find classical solutions for which the 4d effective cosmological constant is adjusted by choice of integration constants. No go theorems for such self-tuning mechanism are circumvented by unorthodox Lagrangians for the three form respectively the scalar. It is argued that the corresponding effective 4d theory always includes tachyonic Kaluza-Klein excitations or ghosts. Known no go theorems are extended to a general class of models with unorthodox Lagrangians.
Cite
@article{arxiv.1301.4228,
title = {General self-tuning solutions and no-go theorem},
author = {Stefan Forste and Jihn E. Kim and Hyun Min Lee},
journal= {arXiv preprint arXiv:1301.4228},
year = {2015}
}
Comments
16 pages, no figures, references added