### Abstract

We consider a class of models with infinite extra dimension, where bulk space does not possess SO (1, 3) invariance, but Lorentz invariance emerges as an approximate symmetry of the low-energy effective theory. In these models, the maximum attainable speeds of the graviton, gauge bosons and scalar particles are automatically equal to each other and smaller than the maximum speed in the bulk. Additional fine-tuning is needed in order to assure that the maximum attainable speed of fermions takes the same value. A peculiar feature of our scenario is that there are no truly localized modes. All four-dimensional particles are resonances with finite widths. The latter depends on the energy of the particle and is naturally small at low energies.

Original language | English (US) |
---|---|

Pages (from-to) | 231-247 |

Number of pages | 17 |

Journal | Journal of High Energy Physics |

Volume | 6 |

Issue number | 1 |

State | Published - Jan 1 2002 |

### Fingerprint

### Keywords

- Extra Large Dimensions
- Space-Time Symmetries

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Journal of High Energy Physics*,

*6*(1), 231-247.

**Tunneling into extra dimension and high-energy violation of Lorentz invariance.** / Dubovsky, Sergei L.

Research output: Contribution to journal › Article

*Journal of High Energy Physics*, vol. 6, no. 1, pp. 231-247.

}

TY - JOUR

T1 - Tunneling into extra dimension and high-energy violation of Lorentz invariance

AU - Dubovsky, Sergei L.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - We consider a class of models with infinite extra dimension, where bulk space does not possess SO (1, 3) invariance, but Lorentz invariance emerges as an approximate symmetry of the low-energy effective theory. In these models, the maximum attainable speeds of the graviton, gauge bosons and scalar particles are automatically equal to each other and smaller than the maximum speed in the bulk. Additional fine-tuning is needed in order to assure that the maximum attainable speed of fermions takes the same value. A peculiar feature of our scenario is that there are no truly localized modes. All four-dimensional particles are resonances with finite widths. The latter depends on the energy of the particle and is naturally small at low energies.

AB - We consider a class of models with infinite extra dimension, where bulk space does not possess SO (1, 3) invariance, but Lorentz invariance emerges as an approximate symmetry of the low-energy effective theory. In these models, the maximum attainable speeds of the graviton, gauge bosons and scalar particles are automatically equal to each other and smaller than the maximum speed in the bulk. Additional fine-tuning is needed in order to assure that the maximum attainable speed of fermions takes the same value. A peculiar feature of our scenario is that there are no truly localized modes. All four-dimensional particles are resonances with finite widths. The latter depends on the energy of the particle and is naturally small at low energies.

KW - Extra Large Dimensions

KW - Space-Time Symmetries

UR - http://www.scopus.com/inward/record.url?scp=21644467846&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=21644467846&partnerID=8YFLogxK

M3 - Article

VL - 6

SP - 231

EP - 247

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 1

ER -