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Diquarks in the instanton picture instanton picture

  • Dmitri Diakonov
  • Victor Petrov
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 417)

Abstract

We recall the 't Hooft-like many-quark interactions induced by instantons. By introducing auxiliary boson fields these interactions can be bosonized in two different ways, “standard” and “non-standard”. The “stadard” bosonization involving only scalar and pseudosalar meson fields in justified in the limit N e → ∞ . We consider in some detail a special case of QCD with N c = N f =2 whose global symmetry is not U(2) L x U(2) R but actually U(4). The “standard” bosonization stresses the diquark degrees of freedom. The real world with N c = N f = 3 lies perhaps in between the imaginary worlds with N c = N f = 2 and N c = ∞. Therefore, one would expect that the diquark degrees of freedom could play some role in the real world as well.

Keywords

Chiral symmetry breaking instantons 't Hooft interactions diquarks 

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Dmitri Diakonov
    • 1
  • Victor Petrov
    • 1
  1. 1.St.Petersburg Nuclear Physics InstituteGatchina, St.PetersburgRussia

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