INVESTIGADORES
LAMBERTI Pedro Walter
artículos
Título:
Stability of a Robertson-Walker Universe against Stochastic Perturbation
Autor/es:
CARLOS BRIOZZO; CARLOS BUDDE; M. CACERES; P.W. LAMBERTI
Revista:
PHYSICS LETTERS A
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 1988 vol. 129 p. 363 - 366
ISSN:
0375-9601
Resumen:
The Einstein-Langevin equations for a Robertson-Walker universe in which a small stochastic perturbation is introduced in the deterministic equations of motion for the radius of the universe are analysed. We solve the associated nonlinear Fokker-Planck equation in the small noise limit using the Ω expansion and find that the cosmological constant plays an essential role in the long time stability of the model.
