- #1
Uncle Al
http://arxiv.org/abs/0711.2274
The cosmological constant is claimed to be tamed and computable.
Curious...
"The Poincare' group generalizes the Galilei group for high-velocity
kinematics. The de Sitter group is here assumed to go one step
further, generalizing Poincare' as the group governing high-energy
kinematics. Algebraically, this is done by supplementing spacetime
translations with proper conformal transformations. This change in
special relativity implies concomitant changes in general relativity
-- yielding a de Sitter general relativity. The source current turns
out to include now, in addition to energy-momentum, the proper
conformal current, which appears as the origin of the cosmological
constant. In consequence, it is no longer a free parameter, and can be
determined in terms of other quantities. When applied to the
propagation of ultra-high energy photons, de Sitter general relativity
gives a good estimate of the time delay observed in extragalactic
gamma-ray flares. It can, for this reason, be considered a new
approach to quantum gravity."
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2
The cosmological constant is claimed to be tamed and computable.
Curious...
"The Poincare' group generalizes the Galilei group for high-velocity
kinematics. The de Sitter group is here assumed to go one step
further, generalizing Poincare' as the group governing high-energy
kinematics. Algebraically, this is done by supplementing spacetime
translations with proper conformal transformations. This change in
special relativity implies concomitant changes in general relativity
-- yielding a de Sitter general relativity. The source current turns
out to include now, in addition to energy-momentum, the proper
conformal current, which appears as the origin of the cosmological
constant. In consequence, it is no longer a free parameter, and can be
determined in terms of other quantities. When applied to the
propagation of ultra-high energy photons, de Sitter general relativity
gives a good estimate of the time delay observed in extragalactic
gamma-ray flares. It can, for this reason, be considered a new
approach to quantum gravity."
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2