1204.5085 (V. Emelyanov et al.)

Instability of de Sitter spacetime from a nonstandard vector field    [PDF]

V. Emelyanov, F. R. Klinkhamer

It is found that de Sitter spacetime, the constant-curvature matter-free solution of the Einstein equations with a positive cosmological constant, becomes classically unstable due to the dynamic effects of a certain type of vector field (fundamentally different from a gauge field). The relevant vector-field configurations violate the strong and dominant energy conditions.

View original: http://arxiv.org/abs/1204.5085