Energy of the homogeneous and isotropic models of the universe

RYBNÍČKOVÁ, Jana. Energy of the homogeneous and isotropic models of the universe. In WDS' 01- Proceedings of Contributed Papers. Praha: matfyzpress, 2001, p. 512-517. ISBN 80-85863-73-1.

Basic information

• Original name: Energy of the homogeneous and isotropic models of the universe
• Authors: RYBNÍČKOVÁ, Jana.
• Edition: Praha, WDS' 01- Proceedings of Contributed Papers, p. 512-517, 2001.
• Publisher: matfyzpress

Other information

• Original language: English
• Type of outcome: Proceedings paper
• Field of Study: 10301 Atomic, molecular and chemical physics
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/01:00004985
• Organization unit: Faculty of Science
• ISBN: 80-85863-73-1
• Keywords in English: conservation law; energy; General Relativity; cosmology
• Tags: conservation law, cosmology, energy, General Relativity

Abstract

The Komar superpotential is used for the calculation of the energy of cosmological models. In Garecki's approach, the vector field of time translation is used as the descriptor of the energy. This approach is applicable to all homogeneous and isotropic models of the universe. The alternative approach uses the timelike Killing vector field in this role, but such field exists for static and de Sitter models only. The complete set if Killing vector fields for homogeneous and isotropic models of the universe is found and the advantages and disadvantages of both approaches are examined.

Links

• GA201/00/0724, research and development project: Name: Geometrická analýza

Investor: Czech Science Foundation, Geometric analysis