# Unbounded operators in non-relativistic QM of one spin-0 particle

dextercioby
Homework Helper
Since you recently mentioned these posts elsewhere, I'll re-revive this unfinished thread...

Did you finish investigating the larger group? If so, what did you find?

Yes for the first question, for the second: arxiv.org article under <math-ph/0102011v2> says it better than me. (I don't have access, however, to Niederer's article in HPA. It would be nice to see the original argument, too.)

strangerep