Cargando…

A 6-D Brane World Model

We consider a 6D space-time which is periodic in one of the extra dimensions and compact in the other. The periodic direction is defined by two 4-brane boundaries. Both static and non-static exact solutions, in which the internal spacetime has constant radius of curvature, are derived. In the case o...

Descripción completa

Detalles Bibliográficos
Autores principales: Kanti, Panagiota, Madden, Richard, Olive, Keith A.
Lenguaje:eng
Publicado: 2001
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.64.044021
http://cds.cern.ch/record/496854
_version_ 1780897175095476224
author Kanti, Panagiota
Madden, Richard
Olive, Keith A.
author_facet Kanti, Panagiota
Madden, Richard
Olive, Keith A.
author_sort Kanti, Panagiota
collection CERN
description We consider a 6D space-time which is periodic in one of the extra dimensions and compact in the other. The periodic direction is defined by two 4-brane boundaries. Both static and non-static exact solutions, in which the internal spacetime has constant radius of curvature, are derived. In the case of static solutions, the brane tensions must be tuned as in the 5D Randall-Sundrum model, however, no additional fine-tuning is necessary between the brane tensions and the bulk cosmological constant. By further relaxing the sole fine-tuning of the model, we derive non-static solutions, describing de Sitter or Anti de Sitter 4D spacetimes, that allow for the fixing of the inter-brane distance and the accommodation of pairs of positive-negative and positive-positive tension branes. Finally, we consider the stability of the radion field in these configurations by employing small, time-dependent perturbations around the background solutions. In analogy with results drawn in 5 dimensions, the solutions describing a de Sitter 4D spacetime turn out to be unstable while those describing an Anti de Sitter geometry are shown to be stable.
id cern-496854
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
record_format invenio
spelling cern-4968542023-03-14T20:03:36Zdoi:10.1103/PhysRevD.64.044021http://cds.cern.ch/record/496854engKanti, PanagiotaMadden, RichardOlive, Keith A.A 6-D Brane World ModelParticle Physics - TheoryWe consider a 6D space-time which is periodic in one of the extra dimensions and compact in the other. The periodic direction is defined by two 4-brane boundaries. Both static and non-static exact solutions, in which the internal spacetime has constant radius of curvature, are derived. In the case of static solutions, the brane tensions must be tuned as in the 5D Randall-Sundrum model, however, no additional fine-tuning is necessary between the brane tensions and the bulk cosmological constant. By further relaxing the sole fine-tuning of the model, we derive non-static solutions, describing de Sitter or Anti de Sitter 4D spacetimes, that allow for the fixing of the inter-brane distance and the accommodation of pairs of positive-negative and positive-positive tension branes. Finally, we consider the stability of the radion field in these configurations by employing small, time-dependent perturbations around the background solutions. In analogy with results drawn in 5 dimensions, the solutions describing a de Sitter 4D spacetime turn out to be unstable while those describing an Anti de Sitter geometry are shown to be stable.We consider a 6D space-time which is periodic in one of the extra dimensions and compact in the other. The periodic direction is defined by two 4-brane boundaries. Both static and non-static exact solutions, in which the internal spacetime has constant radius of curvature, are derived. In the case of static solutions, the brane tensions must be tuned as in the 5D Randall-Sundrum model, however, no additional fine-tuning is necessary between the brane tensions and the bulk cosmological constant. By further relaxing the sole fine-tuning of the model, we derive non-static solutions, describing de Sitter or Anti de Sitter 4D spacetimes, that allow for the fixing of the inter-brane distance and the accommodation of pairs of positive-negative and positive-positive tension branes. Finally, we consider the stability of the radion field in these configurations by employing small, time-dependent perturbations around the background solutions. In analogy with results drawn in 5 dimensions, the solutions describing a de Sitter 4D spacetime turn out to be unstable while those describing an Anti de Sitter geometry are shown to be stable.hep-th/0104177CERN-TH-2001-109UMN-TH-2001-01TPI-MINN-01-15IHES-P-01-16CERN-TH-2001-109UMN-TH-2001TPI-MINN-2001-15IHES-P-2001-16oai:cds.cern.ch:4968542001-04-20
spellingShingle Particle Physics - Theory
Kanti, Panagiota
Madden, Richard
Olive, Keith A.
A 6-D Brane World Model
title A 6-D Brane World Model
title_full A 6-D Brane World Model
title_fullStr A 6-D Brane World Model
title_full_unstemmed A 6-D Brane World Model
title_short A 6-D Brane World Model
title_sort 6-d brane world model
topic Particle Physics - Theory
url https://dx.doi.org/10.1103/PhysRevD.64.044021
http://cds.cern.ch/record/496854
work_keys_str_mv AT kantipanagiota a6dbraneworldmodel
AT maddenrichard a6dbraneworldmodel
AT olivekeitha a6dbraneworldmodel
AT kantipanagiota 6dbraneworldmodel
AT maddenrichard 6dbraneworldmodel
AT olivekeitha 6dbraneworldmodel