Quantum birth of a hot universe

We consider the quantum birth of a hot FRW universe from a vacuum-dominated quantum fluctuation with admixture of radiation and strings which corresponds to quantum tunnelling from a discrete energy level with a non-zero temperature. The presence of strings with the equation of state p = -ε/3 mimics a positive curvature term which makes it possible, in the case of a negative deficit angle, the quantum birth of an open and a flat universe. In the pre-de-Sitter domain radiation energy levels are quantized. We calculate the temperature spectrum and estimate the range of the model parameters restricting temperature fluctuations by the observational constraint on the CMB anisotropy. For the GUT scale of initial de Sitter vacuum the lower limit on temperature at the start of classical evolution is close to the values as predicted by reheating theories, while the upper limit is far from the threshold for a monopole rest mass. © 2002 Elsevier Science B.V. All rights reserved.

Авторы
Dymnikova I.1 , Fil'chenkov M. 2, 3
Редакторы
-
Издательство
-
Номер выпуска
3-4
Язык
Английский
Страницы
214-220
Статус
Опубликовано
Подразделение
-
Номер
-
Том
545
Год
2002
Организации
  • 1 Department of Mathematics and Computer Science, University of Warmia and Mazury, Olnierska 14, 10-561 Olsztyn, Poland
  • 2 Alexander Friedmann Laboratory for Theoretical Physics, St. Petersburg, Russian Federation
  • 3 Institute of Gravitation and Cosmology, Peoples' Friendship University of Russia, 6 Miklukho-Maklaya Street, Moscow 117198, Russian Federation
Ключевые слова
anisotropy; article; cosmos; evolution; quantum theory; radiation energy; spectrum; temperature
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/164/