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$U_{A}(1)$ Problems and Gluon Topology: Anomalous Symmetry in QCD
Many of the distinctive and subtle features of the dynamics in the $U_A(1)$ channel in QCD can be related to gluon topology, more precisely to the topological susceptibility $\chi(k^2) = i\int d^4x~e^{ikx}< 0|T~Q(x)~Q(0)|0>$, where $Q = {\a_s\over8\pi} {\rm tr} G_{\m\n} \tilde G^{\m\n}$ is the...
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| Lenguaje: | eng |
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1998
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| Acceso en línea: | http://cds.cern.ch/record/374336 |