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Abstract
摘要 |
We construct a holographic model of heavy-light mesons
by extending the AdS/QCD to incorporate the behavior
of the heavy quark limit. In that limit, the QCD dynamics
is governed by the light quark and the heavy quark simply
plays the role of a static color source. The heavy quark
spin symmetry can be treated as a global symmetry in the
AdS bulk. As a consequence, the heavy-light mesons are
mapped to "fermions" in the AdS theory. The light flavor
chiral symmetry is naturally built in by this construction,
and its breaking produces the splitting of the parity-doubled
heavy-light meson states. The scaling dependences of physical
quantities on the heavy quark mass in the heavy quark effective
theory are reproduced. The holographic model may capture
the essence of the long distance effects of QCD and can serve
as a useful tool for studying the non-perturbative hadronic
matrix elements involving heavy-light mesons. |
