Single-brane world with stabilized extra dimension
Mikhail N. Smolyakov, Igor P. Volobuev
TL;DR
This paper introduces a model of a single brane with a stabilized extra dimension in five-dimensional space-time, analyzing gravity and stability issues, including the presence of a tachyonic mode.
Contribution
It presents a new stabilized single-brane model with explicit gravity analysis and discusses the stability challenges posed by scalar sector tachyonic modes.
Findings
Derived an expression for the 4D Planck mass in the model
Identified a tachyonic mode in the scalar sector
Discussed stability issues of the model
Abstract
We present a model describing a single brane with tension embedded into a five-dimensional space-time with compact extra dimension, which can be easily stabilized. We examine the linearized gravity in the model and obtain an expression for the four-dimensional Planck mass on the brane in terms of the model parameters. It is also shown that the scalar sector of the effective four-dimensional theory contain a tachyonic mode, and we discuss the problem of stability of the model.
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