- #1
nnerik
- 10
- 4
When I read about string theory, I sometimes get a feeling that the pointlike nature of particles in QFT is a problem that needs to be fixed, but I have never seen an explanation of the problem. Is this correct, and if so, why?
Point in case (from https://en.wikipedia.org/wiki/String_theory):
And just to be sure, what does it mean that elementary particles are point-like in the first place? Does it mean anything besides that the particle has no internal structure? Because clearly the wave function is not point-like (although the position operator's eigen states are).
Point in case (from https://en.wikipedia.org/wiki/String_theory):
In physics, string theory is a theoretical framework in which thepoint-like particles of particle physics are replaced by one-dimensional objects called strings.
And just to be sure, what does it mean that elementary particles are point-like in the first place? Does it mean anything besides that the particle has no internal structure? Because clearly the wave function is not point-like (although the position operator's eigen states are).