Gravitating global monopoles in extra dimensions and the braneworld concept

Multidimensional configurations with a Minkowski external space-time and a spherically symmetric global monopole in extra dimensions are discussed in the context of the braneworld concept. The monopole is formed with a hedgehog-like set of scalar fields Ф* with a symmetry-breaking potential V depending on the magnitude ф'2 - ф'фг. All possible kinds of globally regular configurations are singled out without specifying the shape of V(0). These variants are governed by the maximum value фт of the scalar field, characterizing the energy scale of symmetry breaking. If фт < фсг (where фсг is a critical value of ф related to the multidimensional Planck scale), the monopole reaches infinite radii, whereas in the «strong field regime», when фт > фсг, the monopole may end with a finite-radius cylinder or have two regular centers. The warp factors of monopoles with both infinite and finite radii may either exponentially grow or tend to finite constant values far from the center. All such configurations are shown to be able to trap test scalar matter, in striking contrast to RS2 type five-dimensional models. The monopole structures obtained analytically are also found numerically for the Mexican hat potential with an additional parameter actinc as a cosmoloeical constant.

Авторы
Bronnikov K.A. 1 , В.Е.2
Издательство
MEZHDUNARODNAYA KNIGA / Федеральное государственное бюджетное учреждение "Российская академия наук"
Номер выпуска
6
Язык
Русский
Страницы
1184-1200
Статус
Опубликовано
Том
128
Год
2005
Организации
  • 1 Center for Gravitation and Fundamental Metrology, Russian Research Institute for Metrological Service, Institute of Gravitation and Cosmology, Peoples' Friendship University of Russian
  • 2 Kapitza Institute for Physical Problems
Дата создания
08.07.2024
Дата изменения
08.07.2024
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/113708/
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