Non-minimally coupled nonlinear spinor field in FRW cosmology

Within the scope of a FRW cosmological model we have studied the role of spinor field in the evolution of the Universe when it is non-minimally coupled to the gravitational one. We considered a few types of nonlinearity. It was found that if the spinor field nonlinearity describes an ordinary matter such as radiation, the presence of non-minimality becomes essential and leads to the rapid expansion of the Universe, whereas if the spinor field nonlinearity describes a dark energy, the evolution of the Universe is dominated by it and the difference between the minimal and non-minimally coupled cases becomes almost indistinguishable. Hence it should be argued that non-minimal coupling can be viewed as an alternative way to describe the accelerated mode of expansion of the Universe. © 2020, Springer Nature B.V.

Авторы
Saha B. 1, 2
Издательство
Springer
Номер выпуска
4
Язык
Английский
Статус
Опубликовано
Номер
68
Том
365
Год
2020
Организации
  • 1 Laboratory of Information Technologies, Joint Institute for Nuclear Research, Dubna, Dubna, Moscow Region 141980, Russian Federation
  • 2 Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
Ключевые слова
Dark energy; Isotropic cosmological models; Non-minimal coupling; Spinor field
Дата создания
02.11.2020
Дата изменения
02.11.2020
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/64868/