G'day aris
Mate I have these for now.
When I get time I will post some more
http://arxiv.org/abs/0810.0536
Critical points in a relativistic bosonic gas induced by the quantum structure of spacetime
Authors: Elias Castellanos, Abel Camacho
(Submitted on 2 Oct 2008)
Abstract: It is well known that phase transitions arise if the interaction among particles embodies an attractive as well as a repulsive contribution. In this work it will be shown that the breakdown of Lorentz symmetry, characterized through a deformation in the relation dispersion, plus the bosonic statistics predict the emergence of critical points. In other words, in some quantum gravity models the structure of spacetime implies the emergence of critical points even when no interaction among the particle has been considered.
and
http://arxiv.org/abs/0809.5040
Dark Energy: A Missing Physical Ingredient
Authors: M. I. Wanas
(Submitted on 29 Sep 2008)
Abstract: Recent observation of supernovae type Ia show clearly that there is a large scale repulsive force in the Universe. Neither of the four known fundamental interactions can account for this repulsive force. Gravity is known to be the interaction responsible for the large scale structure and evolution of the Universe. The problem with gravity is that it gives rise to a force which is attractive only. Gravity theories, including General Relativity, deals with gravity as an attractive force. Although this is consistent with our experience in the solar system and other similar astrophysical systems, gravity theories fail to account for SN type Ia observation. So, we are in a real problem concerning the interpretation of these observation. This problem is only ten years old. In order to go out of this problematic situation, scientists have suggested the existence of a type of energy in the Universe that is responsible for the above mentioned repulsive force. They have given this type of energy the exotic term {\it "Dark Energy"}. Although this type of energy forms more than two thirds of the energetic contents of our Universe, its reasonable nature is missing in all gravity theories.
The aim of the present work is to review the present status of the problem of dark energy. Also, to suggest a new geometric solution for this problem.
and
http://arxiv.org/abs/0809.2328
New Possibilities for Observational Distinction Between Geometrical and Field Gravity Theories
Authors: Yu. V. Baryshev (Astron.Inst.St.-Petersburg Univ.)
(Submitted on 13 Sep 2008)
Abstract: Crucial observational tests of gravity physics are reviewed. Such tests are able to clarify the key question on the nature of gravitational interaction: is gravity the curvature of space? or is gravity a matter field in Minkowski flat space as other physical forces? Up to now all actually performed experiments do not allow to distinguish between these two alternatives in gravity physics. The existence of well-defined positive energy-momentum of the gravity field in Poincare-Feynman approach leads to radical changes in gravity physics and cosmology which may be tested by laboratory experiments and astrophysical observations. New possibilities for observational distinction between geometrical general relativity and field gravity theories are discussed. Among them: the contribution of the scalar repulsive force into Newtonian gravitational interaction, post-Newtonian translational motion of rotating bodies, gravitational deflection of light by small mass bodies, scalar gravitational radiation from spherically pulsating stars, existence of limiting radius, surface, magnetic field for massive bodies and absence of singularities and horizons for relativistic compact objects.
I was going to private post. Than again I thought maybe not.
Harry : Smile and live another day.
