Quantum causality

Not exactly the clearest post in terms of what exactly it is that you mean by "uncaused". Are you aware of quantum fluctuation, quantum phase transition, and quantum critical points? Are those what you would categorize as "uncaused"?

Zz.

 

As Zapper pointed out it's not quite clear what you mean by 'uncaused'.

In QM the outcomes of observations cant be predicted, and this seems a general feature. When we throw a dice we know what 'caused' the random outcome. This is the sense QM is 'uncaused'. But it may also be a meaningless question in the sense nature may simply be like that - no cause required.

As to explaining it there is a very deep theorem called Gleason's Theorem, that, assuming a basic aspect of the formalism of QM, implies nature at a fundamental level is like that:
http://en.wikipedia.org/wiki/Gleason's_theorem

Also the modern view of QM is its basically one of the two most reasonable probability models that describe physical systems, the other one being the normal probabilities we encounter everyday such as weather forecasts saying there is a 20% chance of rain:
http://arxiv.org/pdf/quant-ph/0101012.pdf

I personally think nature is just like that - no cause required - but opinions vary.

Thanks
Bill

 

I think the best you can say is that they appear to be non-causal. But how can we be sure that they really are? Consider that diffusion appeared to non causal until the theory of Brownian motion came long. Einstein was never happy with the dice model.