De Sitter Relativity: a New Road to Quantum Gravity?

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Data

2009-01-01

Autores

Aldrovandi, R. [UNESP]
Pereira, J. G. [UNESP]

Título da Revista

ISSN da Revista

Título de Volume

Editor

Springer

Resumo

The Poincar, group generalizes the Galilei group for high-velocity kinematics. The de Sitter group is assumed to go one step further, generalizing Poincar, as the group governing high-energy kinematics. In other words, ordinary special relativity is here replaced by de Sitter relativity. In this theory, the cosmological constant I > is no longer a free parameter, and can be determined in terms of other quantities. When applied to the whole universe, it is able to predict the value of I > and to explain the cosmic coincidence. When applied to the propagation of ultra-high energy photons, it gives a good estimate of the time delay observed in extragalactic gamma-ray flares. It can, for this reason, be considered a new paradigm to approach the quantum gravity problem.

Descrição

Palavras-chave

de Sitter relativity, Cosmological constant, Quantum gravity

Como citar

Foundations of Physics. New York: Springer, v. 39, n. 1, p. 1-19, 2009.