About pressure in model of the expanding Universe
Closed model of Universe on the earlier stage of its evolution is defined more precisely. It is considered here that after the Big Bang and De Sitter’s (exponential) expanding phase in which the pressure is p=-c²ρc (see [1-3]) the post De Sitter’s stage is beginning. State equation on this stage is...
Збережено в:
| Дата: | 2007 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2007
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| Назва видання: | Вопросы атомной науки и техники |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/110964 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | About pressure in model of the expanding Universe / S.S. Sannikov-Proskuryakov // Вопросы атомной науки и техники. — 2007. — № 3. — С. 200-205. — Бібліогр.: 12 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Closed model of Universe on the earlier stage of its evolution is defined more precisely. It is considered here that after the Big Bang and De Sitter’s (exponential) expanding phase in which the pressure is p=-c²ρc (see [1-3]) the post De Sitter’s stage is beginning. State equation on this stage is written in the form p(R)=-c²ρ(R)A(R), where is some pure geometrical factor. Here this equation is investigated and boundary conditions for it are formulated. Explicit expression for A(R) in the class of almost periodical functions is found, that permits to integrate the conservation law. Outgoing from this we come to the following conclusion: at the post De-Sitter’s stage the configuration space of Universe is the Bohr’s compact. Manifold R on which acceleration is positive Rtt>0 are found. Due to the vibrant character of depending A(R) this manifold may advance far in future that is compatible with observed data. |
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