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Lockdown Lab Life
Grounded physicists are exploring the use of online and virtual-reality conferencing, and AI-controlled experiments, to maintain social distancing. Post-pandemic, these positive innovations could make science more accessible and environmentally-friendly.

Is Causality Fundamental?
Untangling how the human perception of cause-and-effect might arise from quantum physics, may help us understand the limits and the potential of AI.

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Physicists are using optogenetics techniques to make a rudimentary agent, from cellular components, which can convert measurements into actions using light.

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Investigating how quantum memory storage could aid machine learning and how quantum interactions with the environment may have played a role in evolution.

Outside the Box
A proposed quantum set-up that could predict your game-playing strategy resurrects Newcomb’s classic quiz show paradox.


FQXI ARTICLE
July 11, 2020

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Recent Comments


Perhaps there should be some other term for variables that mathematicians describe as dimensions but others might not. It is a confusion of definition.

I do not think more than 4 dimensions (orientations) in quaternion arrangement are necessary to describe the fundamental forces, gravity and electromagnetism.

The scalar dimension is IMO best considered as spatio energetic, the same as the other 3 rather than time and 3 dimensions of space.

Ekhard Blumschein mentioned some...


A completely flat and static space time in 10 dimensions sounds like a problem being created rather than a solution, in my opinion.

A series of curved, (but measurably flat, due to the scale) 3D slices of 4D space encountered sequentially could be used to describe the motion of the matter of the 3D universe along the 4th dimension, through 4D space.

Rather than needing 10 new dimensions to describe the movement of the sub atomic particles, the 4th dimension needs to be recognised...


The quest to simplify

Is there a reason to limit our reality to only a few dimensions?

The reason of sticking to few dimension, I gather, is due to the fact that the our knowledge and experience of natural phenomenon is based on confrontation with a set of logical or analogical models common to our senses and to our measurement practice and tools.

And it is a well-known fact that those models, being essentially linear and continuous, have a specific characteristic: they can...

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