Universe symmetries
Description
The sky uniformity can be noticed in studying the repartition of objects far enough. The sky isotropy description uses space rotations. The group theory elements will allow to give a meaning at the same time precise and general to the word a ''symmetry''. Universe models are reviewed, which must have both of the following qualities: - conformity with the physic known laws; - rigorous symmetry following one of the permitted groups. Each of the models foresees that universe evolution obeys an evolution equation. Expansion and big-bang theory are recalled. Is universe an open or closed space. Universe is also electrically neutral. That leads to a work hypothesis: the existing matter is not given data of universe but it appeared by evolution from nothing. Problem of matter and antimatter is then raised up together with its place in universe
Availability note (English)
MF available from INIS under the Report Number.Abstract (French)
L'uniformite du ciel peut se constater en etudiant la repartition des objects assez lointains. La description de l'isotropie du ciel fait appel aux rotations de l'espace. Les elements de la theorie des groupes vont permettre de donner un sens a la fois precis et general au mot symetrie. On passe en revue les ''modeles'' de l'univers, qui representent les 2 qualites suivantes: -conformite avec la lois connue de la physique; - symetrie rigoureuse selon l'un des groupes permis. Chacun de modeles prevoit que l'evolution de l'univers obeit a une equation d'evolution. Expansion et big-bang sont rappeles. L'univers est il un espace ouvert on ferme. L'univers est electriquement neutre ce qui entraine une hypothese de travail. La matiere existante n'est pas une donnee initiale de l'univers mais elle est apparue par evolution a partir de rien. Le probleme de l'antimatiere et de sa place dans l'univers est aussi evoqueFiles
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Additional details
Additional titles
- Original title (French)
- Les symetries de l'univers
Publishing Information
- Imprint Pagination
- 37 p.
- Report number
- CNRS-CPT--84-PE-1703
Conference
- Title
- Meeting of the science academy.
- Dates
- 6 Feb 1984.
- Place
- Paris (France).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 16079359
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COSMOLOGICAL MODELS; EXPANSION; SYMMETRY; TOPOLOGY; UNIVERSE
- Descriptors DEC
- MATHEMATICAL MODELS; MATHEMATICS