Abstract
We show that, in a relativistic quantum theory in which the mass shell is not sharp, and positive and negative energy states are admissable, causal propagation is possible, and Hegerfeldt's theorem can be avoided. The conditions under which this is true have simple physical interpretation.
| Original language | English |
|---|---|
| Pages (from-to) | 289-295 |
| Number of pages | 7 |
| Journal | Foundations of Physics Letters |
| Volume | 4 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 1991 |
| Externally published | Yes |
Keywords
- causal propagation
- localization
- relativistic quantum mechanics