Short Distance Quantum Physics

[clarkvangilder]

Does this paper [https://arxiv.org/pdf/1505.06963.pdf] give sufficient reason to accept/believe that the infinities where we "find" singularities can never really happen because there is a minimum length scale that prevents it? Hoping that I have made at least a reasonable deduction from the article.

I also sense that they may misuse the notion of quantum fluctuations (based on other threads herein); but reserve the right to be wrong on that too.

Just interested in getting some opinions on this rather than starting a fight. Sometimes just asking a question in here leads to a scolding.

 

[clarkvangilder]

Also, what the heck are the prefixes for? I had not seen that before. Hope choosing B was OK.

 

[PeterDonis]

what the heck are the prefixes for?

For identifying the level of background knowledge assumed in the discussion. "B" is basic (high school), "I" is intermediate (undergraduate), "A" is advanced (graduate). I have changed the level of this thread to "I" (the subject matter could even be "A").

 

[_PJ_]

As I understand it, any introduction of singularities poses problems for QM just as much as GR.
Possibly a strong theory for Quantum Gravity might one day address these problems.