Artigo
De Sitter Special Relativity: Effects on cosmology
Fecha
2009-10-01Registro en:
Gravitation & Cosmology. New York: Springer, v. 15, n. 4, p. 287-294, 2009.
0202-2893
10.1134/S020228930904001X
WOS:000271980100001
1599966126072450
Autor
Universidade Estadual Paulista (Unesp)
Resumen
The main consequences of de Sitter Special Relativity for the Standard Model of physical cosmology are examined. The cosmological constant I > appears, in this theory, as a manifestation of the proper conformal current which must be added to the usual energy-momentum density when the Poincar, kinematics of special relativity is replaced by a de Sitter kinematics. Since that conformal current itself vanishes in the absence of sources, I > is ultimately dependent on the matter content and can in principle be calculated. A present-day value very close to that given by the crossed supernova/BBR data is obtained through simple and reasonable assumptions. Also, a primeval inflation of polynomial type is found, and the usual notion of a comoving observer is shown to be slightly modified.