Physics NotePublished
Minimal Closed Set of Observables in the Theory of Cosmological Perturbations
M. Novello; J. M. Salim; M. C. M. Silva; S.E. Jorás; R. Klippert
1994
Publication details
- Authors
- M. Novello; J. M. Salim; M. C. M. Silva; S.E. Jorás; R. Klippert
- Type
- Physics Note
- Status
- Published
- Publication date
- 1994
- Description
- The theory of perturbation of Friedman-Robertson-Walker (FRW) cosmology is analysed exclusively in terms of observable quantities. Although this can be a very complete and general procedure we limit our presentation here to the case of irrotational perturbations for simplicity. We show that the electric part of Weyl conformal tensor E and the shear <math>\Sigma\,\!</math> constitute the two basic perturbed variables in terms of which all remaining observable quantities can be described. Einstein's equations of General Relativity reduce to a closed set of dynamical system for E and <math>\Sigma\,\!</math> . The basis for a gauge-invariant Hamiltonian treatment of the Perturbation Theory in the FRW background is then set up.
- Year
- 1994
- Number
- CBPF-NF-009/94
- Linked to a thesis
- No
- Linked to a grant
- No