Posts Tagged ‘spacetime’

Quantum entanglement

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The argument about entanglement goes back to Einstein. The notorious EPR (Einstein/Podolsky/Rosen) thought experiment of 1935 demonstrated that if quantum mechanics was correct then the determination of the state of one quantum particle could instantaneously and over any distance determine the state of another particle. This was afterwards referred to as entanglement or quantum entanglement.

Reality, perception, physics

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Thoughts on Reality An insubstantial pageant The one thing we can be reasonably sure of is that what we see has nothing to do with reality. Physics tells us as much as that; that there are no things and there is no colour green. Visual information is delivered to the retina by photons fluctuating at varying frequencies. The photons are either reflected from or produced by ‘objects’, which can in their turn be understood as quantum particles held together by the charges of the electromagnetic Read more […]

Special relativity and causality

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ON SPECIAL RELATIVITY Based on material from Roger Penrose and David Bohm While quantum theory and still more its implications have been censored out of much of popular thought and education, relativity may have had the opposite fate of being popularised as a wow! factor, with possibly a lack of balance as to what is really important about the theory. Mass-energy equivalence It could be argued that mass-energy equivalence is of greater significance than more crowd-stopping ideas such as Read more […]

Spacetime theories

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An understanding of the beginning of the universe requires an integration of general relativity and quantum theory or in other words a theory of quantum gravity. String theory has been the best known attempt at this with quanta described as the vibrations of one dimensional strings. However, alternative theories have emerged in recent years.

Quantum Spacetime and Consciousness

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Author: Philip J Carter, Invited article for the Journal of Neuroquantology Submission history [v1] 2013-12-26 14:51:58 [v2] 2014-01-16 12:49:26 A higher-dimensional spacetime model is proposed, accounting for nonlocal quantum phenomena while embracing Special Relativity as a limiting case. The Aspect and Megidish experiments are explained within this spacetime framework. Time is understood as spatial motion relative to higher dimensions, offering the degrees of freedom demanded by nonlocal Read more […]

Three Roads to Quantum Gravity

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Lee Smolin Wiedenfeld & Nicholson Smolin highlights the argument that space or spacetime is not continous but comes in discrete units, and further that these discrete units represent an organised structure. He stresses the conflict between relativity and quantum theory and argues that a theory of quantum gravity is needed to bridge the gap, describe the nature of spacetime and ultimately the origin of the universe. In relativity, gravity manifests the structure of spacetime, which is Read more […]

Marcus Chown on physical laws

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The Never Ending Days of Being Dead: Dispatches from the Front Line of Science Marcus Chown The ideas discussed in this book look crucial to our understanding of spacetime, energy, matter, the physical law and the relationship of consciousness to all of these. Spacetime and the energy it contains are viewed as fundamental, while quantum particles are suggested to be less fundamental being distortions of the underlying spacetime. This could be seen as related to the Penrose suggestion of objective Read more […]

Spacetime and decisions

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Spacetime and decisions From the webmaster Keywords: Spacetime, decision-making, emotion, freewill There is something like a consensus in physics that spacetime is discrete rather than continuous. This would appear to mean that spacetime is something like a network or web having pattern, and therefore capable of representing or conveying information. Clearly there is no evolutionary advantage in expending energy accessing the spacetime level, if it only does the same kind of logic or Read more […]