Scalar Field in Cosmology: Potential for Isotropization and Inflation

The important role of scalar field in cosmology was noticed by a number of authors. Due to the fact that the scalar field possesses zero spin, it was basically considered in isotropic cosmological models. If considered in an anisotropic model, the linear scalar field does not lead to isotropization of expansion process. One needs to introduce scalar field with nonlinear potential for the isotropization process to take place. In this paper the general form of scalar field potentials leading to the asymptotic isotropization in case of Bianchi type-I cosmological model, and inflationary regime in case of isotropic space-time is obtained. In doing so we solved both direct and inverse problem, where by direct problem we mean to find metric functions and scalar field for the given potential, whereas, the inverse problem means to find the potential and scalar field for the given metric function. The scalar field potentials leading to the inflation and isotropization were found both for harmonic and proper synchronic time. © 2011 Springer Science+Business Media, LLC.

Авторы
Редакторы
-
Издательство
Kluwer Academic/Plenum Publishers
Номер выпуска
11
Язык
Английский
Страницы
3421-3431
Статус
Опубликовано
Подразделение
-
Номер
-
Том
50
Год
2011
Организации
  • 1 Department of Theoretical Physics, Peoples' Friendship University of Russia, 117198 Moscow, Russian Federation
  • 2 Laboratory of Information Technologies, Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russian Federation
Ключевые слова
Bianchi type I (BI) model; Potential; Scalar field
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/2470/