Скачать или смотреть Feynman's Quantum Mechanical sum over histories, for a free particle, with Sunderland MathsFix

Note the image of Richard Feynman is not mine it comes from this website:http://www.atomicheritage.org/profile...
and the music is not mine either it comes from here    • Symphony of Science - the Quantum World!  
The use of both of these materials is fair use.

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The rest of the video consists of my own research conducted as part of Durham University.

Quantum Mechanically, particles exist in an infinite superposition of position states and this means that particles follow infinite numbers of trajectories at once rather than just one trajectory. However, by increasing m/(hbart) the classical limit for the free particle can be achieved with particles simply travelling along a straight line from one point to another. The graphs first show the contribution to the probability of finding a particle at q=1, from previously finding it at q=0 ,from simulations of trajectories as m/(hbart) is increased. Then, the later graphs show how the contribution of the paths varies as you increase the mean distance between neighbouring points as m/(hbart) increases, with the pie charts showing exactly how much paths with different mean distance between neighboring points contribute as m/(hbart) increases.

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