Testing an approximation to large-Nc QCD with a toy model

Maarten Golterman, Santiago Peris, Boris Phily, Eduardo De Rafael

Research output: Contribution to journalArticleResearchpeer-review

40 Citations (Scopus)


We consider a simple model of large-Nc QCD defined by a spectrum consisting of an infinite set of equally spaced zero-width vector resonances. This model is an excellent theoretical laboratory for investigating certain approximation schemes which have been used recently in calculations of hadronic parameters, such as the Minimal Hadronic Approximation. We also comment on some of the questions concerning issues of local duality versus global duality and finite-energy sum rules. © SISSA/ISAS 2002.
Original languageEnglish
Pages (from-to)505-523
JournalJournal of High Energy Physics
Issue number1
Publication statusPublished - 1 Jan 2002


  • 1/N Expansion
  • Phenomenological Models
  • QCD
  • Sum Rules


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