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I have read several recent articles regarding the two experiments that were done that reveal the effects of a fourth spatial dimension via the quantum Hall effect using lasers and whatnot. I found these articles unsatisfactory and didn't really understand what the quantum Hall effect was or exactly how the experiment worked and what it showed.

Could someone give a thorough explanation of the experiments and the quantum mechanics/theoretical framework behind them, without shying away from the complexities?

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  • $\begingroup$ Please provide the links to the articles you mention $\endgroup$
    – Yuriy S
    Jan 12, 2018 at 15:36
  • $\begingroup$ @YuriyS There were a ton of terrible articles about it a few days ago. I was also wondering what the actual discovery was. Sounds like they just ran a simulation? express.co.uk/news/science/901542/… techworm.net/2018/01/… newsweek.com/… $\endgroup$
    – endolith
    Jan 12, 2018 at 17:07
  • $\begingroup$ @endolith, your second link has two papers from Nature linked, which are both open-access. You can see that the research is experimental, though it of course has nothing to do with 4th space dimension at all $\endgroup$
    – Yuriy S
    Jan 13, 2018 at 14:05
  • $\begingroup$ @YuriyS Third link, and here are direct links: nature.com/articles/nature25000.epdf nature.com/articles/nature25011.epdf But having access to the papers doesn't mean I understand them. $\endgroup$
    – endolith
    Jan 13, 2018 at 14:14
  • $\begingroup$ @endolith, my mistake, the third link. Of course, I don't understand the topic either, but it's quite clear both are experimental $\endgroup$
    – Yuriy S
    Jan 13, 2018 at 14:15

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I know well the quantum Hall effect which is a two dimensional effect. What these people possibly found is at most two multiplied 2D QHE which looks like a 4D effect. There is no way to find a 4D effect with 4 degrees of freedom. The 4D that these people imagine to see in their effects are dependent dimensions.

F.G.

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    $\begingroup$ I asked for a detailed explanation. This isn't better than the articles. $\endgroup$ Jan 12, 2018 at 18:19
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    $\begingroup$ @QFTUNIverse, I suggest you look up the original scientific papers linked here: newsweek.com/…. The physics is quite complicated, I don't think I can explain it myself. Unfortunately, the corresponding author's email is not listed, but you could try googling them to find a valid email and ask them for an explanation. Most scientists are happy to talk about their research especially in relation to a "sensationalist" news publications such as this $\endgroup$
    – Yuriy S
    Jan 13, 2018 at 14:11

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