Scattering of composite goldstone bosons in a renormalization QFT

Baruch Rosenstein*, Brian J. Warr

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We calculate the scattering amplitudes of composite Goldstone bosons in the (2+1)-dimensional four-Fermi model, using the technique of 1/N expansion. The Goldstone bosons correspond to the symmetry breaking pattern UL(n)×UR(n)→U(n). The effective lagrangian describing the low-energy scattering is explicitly derived. We also compute the effects of explicit symmetry breaking parameters. Unitary in the context of the 1/N expansion is analyzed in some detail.

Original languageEnglish
Pages (from-to)288-300
Number of pages13
JournalNuclear Physics, Section B
Issue number2
StatePublished - 7 May 1990

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