Quantum gravitational decoherence of light and matter

T.O. is most grateful for a Carnegie Scholarship. C.W. acknowledges support from the EPSRC GG-Top Project.Peer reviewedPublisher PD

Spacetime foam induced collective bundling of intense fields

This research is supported by the Carnegie Trust for the Universities of Scotland (TO) and by the EPSRC GG-Top Project and the Cruickshank Trust (CW).Peer reviewedPublisher PD

Quantum coherence, radiance, and resistance of gravitational systems

This work was supported by the Carnegie Trust for the Universities of Scotland (T.O.) and by the EPSRC GG-Top Project and the Cruickshank Trust (C.W.).Peer reviewedPublisher PD

Immirzi parameter without Immirzi ambiguity : Conformal loop quantization of scalar-tensor gravity

C.W. wishes to thank G. Immirzi and C. Rovelli for early discussions and brief correspondence respectively, and appreciates the EPSRC GG-Top Project and the Cruickshank Trust for financial support. O.V. is grateful to the Aberdeen University College of Physical Sciences for a research studentship.Peer reviewedPublisher PD

Quantisation of Paths in Space-Time and Non-Perturbative Quantum Gravity

In previous work we discussed the quantization of paths in spacetime. Building on these ideas we have developed a mathematically coherent theory addressing a number of open questions concerning Loop Quantum Gravity. Our approach develops a discrete spacetime and shows that macroscopic spacetime is a renormalization limiting form. Weaving together a number of our previous results we then prove that quantum states invariant under either an external group of local diffeomorphisms of spacetime or by contrast quantum states invariant under the internal action of a compact Lie group are common in a well-defined sense. These form the building blocks of invariant fields and Lagrangians. A form of supersymmetry and noncommutative spacetime naturally emerges, which predicts a massless graviton and its companion gravitino.Comment: 26 page

The Relationship Between Galactic Cosmic Rays and Solar Wind

We are grateful to the following people /groups for their useful contributions: • Members of the QG2 University of Aberdeen, UK. • H. Moraal, School of Physics, Potchefstroom University, Potchefstroom, 2520, South Africa. • R. A. Caballero-Lopez, Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USAPublisher PD

A Time-dependent and Anisotropic Force Field Model For Galactic Cosmic Ray Flux

We sincerely appreciate the following people /groups for their useful contributions. • Members of the QG2 University of Aberdeen, UK. • H. Moraal, School of Physics, Potchefstroom University, Potchefstroom, 2520, South Africa. • R. A. Caballero-Lopez, Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, USAPublisher PD