Modes with variable mass as an alternative in AdS/QCD models with chiral symmetry breaking
Modes with variable mass as an alternative in AdS/QCD models with chiral symmetry breaking
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DOI：
10.1103/physrevd.82.115023
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发表时间：
2010-05
影响因子：
5
通讯作者：
Alfredo Vega;I. Schmidt
中科院分区：
文献类型：
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作者：
Alfredo Vega;I. Schmidt
我们考虑了在具有二次膨胀和AdS度规的软壁模型中加入手性对称破缺的一种新的可能性。特别地，我们允许标量模在体中传播的质量依赖于全息坐标。在我们讨论的其中一个模型中，考虑到当前的夸克质量，可以获得良好的介子谱，而在考虑的另外两个模型中，可以以考虑相当大的夸克质量为代价获得良好的结果。
We consider a new possibility of incorporating chiral symmetry breaking in soft wall models with a quadratic dilaton and AdS metric. In particular, we allow the mass of the scalar modes propagating in the bulk to have a dependence on the holographical coordinate. In one of the models that we discuss, it is possible obtain a good meson spectra considering current quark masses, and in the other two models considered, good results can be obtained at the expense of considering rather large quark masses.