TY - JOUR
T1 - The axial anomaly and the bound-state spectrum in confining theories
AU - Frishman, Y.
AU - Schwimmer, A.
AU - Banks, T.
AU - Yankielowicz, S.
N1 - Funding Information:
I Supported in part by the Israel Commission for Basic Research and the United States-Israel Binational Science Foundation. 2 Supported in part by the Israel Academy of Science, Jerttsalem.
PY - 1981/1/5
Y1 - 1981/1/5
N2 - We show that the axial anomaly of three-point functions of colour singlet currents in quark confining theories implies the presence of zero-mass bound states in the physical spectrum. These can be either massless fermions or Goldstone bosons. This supplements an argument given by 't Hooft. We then show, for any number of colours (with more than two flavours), that Goldstone bosons actually follow. Various aspects of heavy quark decoupling are also discussed.
AB - We show that the axial anomaly of three-point functions of colour singlet currents in quark confining theories implies the presence of zero-mass bound states in the physical spectrum. These can be either massless fermions or Goldstone bosons. This supplements an argument given by 't Hooft. We then show, for any number of colours (with more than two flavours), that Goldstone bosons actually follow. Various aspects of heavy quark decoupling are also discussed.
UR - http://www.scopus.com/inward/record.url?scp=33744764111&partnerID=8YFLogxK
U2 - 10.1016/0550-3213(81)90268-6
DO - 10.1016/0550-3213(81)90268-6
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AN - SCOPUS:33744764111
SN - 0550-3213
VL - 177
SP - 157
EP - 171
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 1
ER -