# What is a fracton? [closed]

Recent, in articles on QFT and condensed matter new objects appear -- fractons.

As I understand now, fracton is a particle with restricted motion: for example, such excitations can move only along line.

1. If such excitations have restricted motion, how they deal with uncertainty principle?

2. Could somebody present simple model, where such excitations appear?

3. Also, it is very interesting to understand, which role such excitations play in condensed matter systems?