Applications of the Eigenmodes of the Staggered Dirac Operator
نویسنده
چکیده
In a recent study [1] we successfully calculated the mass of the η meson using staggered fermions. According to conventional lore, the η′ receives a large portion of its mass from instanton effects. At the fermionic level, this would mean receiving contributions from zero modes of the Dirac operator. These zero modes come with a definite chirality in the continuum and are associated with the topological charge (Q) of a gauge configuration via the index theorem:
منابع مشابه
ar X iv : h ep - l at / 9 71 00 86 v 1 2 4 O ct 1 99 7 1 Applications of the Eigenmodes of the Staggered Dirac Operator
We have constructed the lowest few eigenvectors of the staggered Dirac operator on SU (3) gauge configurations, both quenched and dynamical. We use these modes to study the topological charge and to construct approximate hadronic correlators.
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تاریخ انتشار 1997