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arXiv 0912.5465hep-thhep-latmath-phmath.MP
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Yang-Mills哈密顿量的空间导数展开和胶球谱

Expansion of the Yang-Mills Hamiltonian in spatial derivatives and glueball spectrum

Hans-Peter Pavel

摘要:

利用对称规范ε_{ijk} A_{jk} =0,对SU(2)Yang-Mills量子哈密顿量进行了强耦合展开.引入盒长为a的无限格,得到了λ \equiv g^{-2/3}中哈密顿量的系统强耦合展开式,其中自由部分是每个盒的常场杨-米尔斯量子力学哈密顿量和连接不同盒的高阶空间导数项的和.相对于自由胶球谱的相应偏差,在前面的杨-米尔斯空间恒定场量子力学的情况下得到,使用λ中的微扰理论计算。作为第一步,我们得到了相互作用胶球真空和相互作用自旋为0的胶球的能谱。讨论了它与红外光谱中耦合常数重正化的关系,指出红外不动点的存在。

英文摘要:

A strong coupling expansion of the SU(2) Yang-Mills quantum Hamiltonian is carried out in the form of an expansion in the number of spatial derivatives, using the symmetric gauge ε_{ijk} A_{jk}=0. Introducing an infinite lattice with box length a, I obtain a systematic strong coupling expansion of the Hamiltonian in λ\equiv g^{-2/3}, with the free part being the sum of Hamiltonians of Yang-Mills quantum mechanics of constant fields for each box, and interaction terms of higher and higher number of spatial derivatives connecting different boxes. The corresponding deviation from the free glueball spectrum, obtained earlier for the case of the Yang-Mills quantum mechanics of spatially constant fields, is calculated using perturbation theory in λ. As a first step, the interacting glueball vacuum and the energy spectrum of the interacting spin-0 glueball are obtained to order λ^2. Its relation to the renormalisation of the coupling constant in the IR is discussed, indicating the absence of infrared fixed points.

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