### Abstract

We discuss the localization of scalar, fermion, and gauge field zero modes on a 3-brane that resides at the intersection of two 4-branes in six-dimensional anti-de Sitter space. This setup has been introduced in the context of braneworld models and, higher-dimensional versions of it, in string theory. In both six- and ten-dimensional cases, it has been shown that four-dimensional gravity can be reproduced at the intersection, due to the existence of a massless, localized graviton zero-mode. However, realistic scenarios require also the standard model to be localized on the 3-brane. In this paper, we discuss under which conditions a higher-dimensional field theory, propagating on the above geometry, can have a zero-mode sector localized at the intersection and find that zero modes can be localized only if masses and couplings to the background curvature satisfy certain relations. We also consider the case when other 4-branes cut the bulk at some distance from the intersection and argue that, in the probe brane approximation, there is no significant effect on the localization properties at the 3-brane. The case of bulk fermions is particularly interesting, since the properties of the geometry allow localization of chiral modes independently.

Original language | English |
---|---|

Article number | 104021 |

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 79 |

Issue number | 10 |

DOIs | |

Publication status | Published - 2009 May 1 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

### Cite this

*Physical Review D - Particles, Fields, Gravitation and Cosmology*,

*79*(10), [104021]. https://doi.org/10.1103/PhysRevD.79.104021

**Field localization on a brane intersection in anti-de Sitter spacetime.** / Flachi, Antonino; Minamitsuji, Masato.

Research output: Contribution to journal › Article

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 79, no. 10, 104021. https://doi.org/10.1103/PhysRevD.79.104021

}

TY - JOUR

T1 - Field localization on a brane intersection in anti-de Sitter spacetime

AU - Flachi, Antonino

AU - Minamitsuji, Masato

PY - 2009/5/1

Y1 - 2009/5/1

N2 - We discuss the localization of scalar, fermion, and gauge field zero modes on a 3-brane that resides at the intersection of two 4-branes in six-dimensional anti-de Sitter space. This setup has been introduced in the context of braneworld models and, higher-dimensional versions of it, in string theory. In both six- and ten-dimensional cases, it has been shown that four-dimensional gravity can be reproduced at the intersection, due to the existence of a massless, localized graviton zero-mode. However, realistic scenarios require also the standard model to be localized on the 3-brane. In this paper, we discuss under which conditions a higher-dimensional field theory, propagating on the above geometry, can have a zero-mode sector localized at the intersection and find that zero modes can be localized only if masses and couplings to the background curvature satisfy certain relations. We also consider the case when other 4-branes cut the bulk at some distance from the intersection and argue that, in the probe brane approximation, there is no significant effect on the localization properties at the 3-brane. The case of bulk fermions is particularly interesting, since the properties of the geometry allow localization of chiral modes independently.

AB - We discuss the localization of scalar, fermion, and gauge field zero modes on a 3-brane that resides at the intersection of two 4-branes in six-dimensional anti-de Sitter space. This setup has been introduced in the context of braneworld models and, higher-dimensional versions of it, in string theory. In both six- and ten-dimensional cases, it has been shown that four-dimensional gravity can be reproduced at the intersection, due to the existence of a massless, localized graviton zero-mode. However, realistic scenarios require also the standard model to be localized on the 3-brane. In this paper, we discuss under which conditions a higher-dimensional field theory, propagating on the above geometry, can have a zero-mode sector localized at the intersection and find that zero modes can be localized only if masses and couplings to the background curvature satisfy certain relations. We also consider the case when other 4-branes cut the bulk at some distance from the intersection and argue that, in the probe brane approximation, there is no significant effect on the localization properties at the 3-brane. The case of bulk fermions is particularly interesting, since the properties of the geometry allow localization of chiral modes independently.

UR - http://www.scopus.com/inward/record.url?scp=67449095202&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67449095202&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.79.104021

DO - 10.1103/PhysRevD.79.104021

M3 - Article

AN - SCOPUS:67449095202

VL - 79

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 10

M1 - 104021

ER -