Abstract
It is suggested that bound states can emerge in field theory as alternate solutions to the Bethe-Salpeter equation, not corresponding to the Neumann-series (perturbation-theory) solution. These new solutions are asymptotically similar to elementary-particle solutions and imply nonperturbative anomalous dimensions in the Wilson operator-product expansion. For Goldstone bosons in standard quark models as well as for certain solvable ladder models, these are the only bound-state solutions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1592-1595 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 34 |
| Issue number | 25 |
| DOIs | |
| State | Published - 1975 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy