Anne Bogart, and then, you act : making art in an unpredictable world

Review of Anne Bogart's 2007 'And then, you act: making art in an unpredictable world

The orientability of spacetime

Contrary to established beliefs, spacetime may not be time-orientable. By considering an experimental test of time-orientability it is shown that a failure of time-orientability of a spacetime region would be indistinguishable from a particle-antiparticle annihilation event

The Logic of Quantum Mechanics Derived from Classical General Relativity

For the first time it is shown that the logic of quantum mechanics can be derived from Classical Physics. An orthomodular lattice of propositions, characteristic of quantum logic, is constructed for manifolds in Einstein's theory of general relativity. A particle is modelled by a topologically non-trivial 4-manifold with closed timelike curves - a 4-geon, rather than as an evolving 3-manifold. It is then possible for both the state preparation and measurement apparatus to constrain the results of experiments. It is shown that propositions about the results of measurements can satisfy a non-distributive logic rather than the Boolean logic of classical systems. Reasonable assumptions about the role of the measurement apparatus leads to an orthomodular lattice of propositions characteristic of quantum logic.Comment: 16 pages Late