Abstract
A stability analysis of the Bianchi type-I universe in pure gravity theory is studied in detail. We first derive the nonredundant field equation of the system by introducing the generalized Bianchi type-I metric. This nonredundant equation reduces to the Friedmann equation in the isotropic limit. It is shown further that any unstable mode of the isotropic perturbation with respect to a de Sitter background is also unstable with respect to anisotropic perturbations. The implications of the choice of physical theories are discussed in detail in this paper.
Original language | English |
---|---|
Article number | 107301 |
Pages (from-to) | 1-4 |
Number of pages | 4 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 64 |
Issue number | 10 |
DOIs | |
State | Published - 15 Nov 2001 |