New class of bound-state solutions in field theory

Paul Langacker

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


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 languageEnglish (US)
Pages (from-to)1592-1595
Number of pages4
JournalPhysical review letters
Issue number25
StatePublished - 1975

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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