1 S ep 1 99 4 Effective Field Theories from QCD ∗
نویسنده
چکیده
We present a method for extracting effective Lagrangians from QCD. The resulting effective Lagrangians are based on exact rewrites of cutoff QCD in terms of these new collective field degrees of freedom. These cutoff Lagrangians are thus " effective " in the sense that they explicitly contain some of the physical long-distance degrees of freedom from the outset. As an example we discuss the introduction of a new collective field carrying the quantum numbers of the η ′-meson.
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تاریخ انتشار 2008