Тип публикации: статья из журнала
Год издания: 2015
Идентификатор DOI: 10.1142/S0218271815500352
Ключевые слова: Buchert averaging, negative deceleration, backreaction
Аннотация: In this paper, the Buchert averaging of the Dust Shell Universe is explicitly carried out. The dynamical backreaction does not vanish in such a model. Instead, it acts as the possible source of the negative deceleration. However, the parameters of the model allowing negative deceleration lead to mean overdensities with r(200) > 10 Показать полностьюh(-1) Mpc and peculiar velocities as high as the fifth part of the speed of light. With more realistic parameter values the averaged model behavior is close to Friedmannian.
Журнал: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
Выпуск журнала: Vol. 24, Is. 5
ISSN журнала: 02182718
Место издания: SINGAPORE
Издатель: WORLD SCIENTIFIC PUBL CO PTE LTD