Abstract
I summarize results recently obtained in collaboration with Amelino-Camelia, Bruno and Mandanici (preprint University of Rome “La Sapienza”, August, 2005) that concern an analysis of the path of a massless particle in a q-de Sitter space-time and an approximation scheme suitable for the corresponding analysis in a quantum FRW Universe. On the basis of some arguments in the quantum-gravity literature, the q deformation parameter is assumed to depend on both the Planck scale and the curvature, leading to results that are significantly different from those of other studies of Planck-scale effects in cosmology, where the possibility of an interplay between curvature and Planck scale was ignored.
Similar content being viewed by others
References
S. Majid and H. Ruegg: Phys. Lett. B 334 (1994) 348. J. Lukierski, H. Ruegg, and W.J. Zakrzewski: Ann. Phys. 243 (1995) 90. G. Amelino-Camelia and S. Majid: hep-th/9907110; Int. J. Mod. Phys. A 15 (2000) 4301.
S. Alexander, R. Brandenberger and J. Magueijo: hep-th/0108190. S. Alexander and J. Magueijo: hep-th/0104093. R. Brandenberger: hep-th/0210186. J. Magueijo: astro-ph/0305457; Rept. Prog. Phys. 66 (2003) 2025.
G. Amelino-Camelia, N.R. Bruno, G. Mandanici, and A. Marciano: Preprint University of Rome “La Sapienza”, August 2005.
A. Ballesteros, N.R. Bruno, and F.J. Herranz: hep-th/0401244. V.G. Drinfel'd: Sov. Math. Dokl. 27 (1983) 68.
H.J. Schmidt: Fortschr. Phys. 41 (1939) 179.
L.D. Faddeev, N.Y. Reshetikhin, and L.A. Takhtajan: Lengingrad Math. J. 1 (1990) 193.
J. Lukierski, A. Nowicki, and H. Ruegg: Phys. Lett. B 271 (1991) 321; hep-th/9108018.
G. Amelino-Camelia, L. Smolin, and A. Starodubtsev: hep-th/0306134.
L. Smolin: hep-th/0209079. A. Starodubtsev: hep-th/0306135.
E. Inonu and E.P. Wigner: Proc. Natl. Acad. Sci. U.S. 39 (1953) 510.
G. Amelino-Camelia, J. Lukierski, and A. Nowicki: Int. J. Mod. Phys. A 14 (1999) 4575; gr-qc/9903066. G. Amelino-Camelia, F. D'Andrea, and G. Mandanici: (2002) JCAP 0309: 006, 2003; hep-th/0211022.