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arXiv 1204.0296hep-phnucl-th
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高斯波函数近似下的标量和赝标量Gebrishball质量

Scalar and Pseudoscalar Glueball Masses within a Gaussian Wavefunctional Approximation

Y. Tsue

摘要:

最低的标量和赝标量胶球质量的评估通过含时变分方法的杨-米尔斯规范理论没有费米子的哈密顿形式主义内高斯波函数近似。对于由两个无质量胶子组成的复合胶球场,胶球质量被计算为传播子的一个极点。本文利用复合胶球外场的线性响应理论计算了胶球传播子。结果表明,通过两个无质量胶子之间的相互作用,得到了一个有限的胶球质量,其中胶球质量依赖于非微扰形式的QCD耦合常数g。

英文摘要:

The lowest scalar and pseudoscalar glueball masses are evaluated by means of the time-dependent variational approach to the Yang-Mills gauge theory without fermions in the Hamiltonian formalism within a Gaussian wavefunctional approximation. The glueball mass is calculated as a pole of the propagator for a composite glueball field which consists of two massless gluons. The glueball propagator is here evaluated by using the linear response theory for the composite external glueball field. As a result, a finite glueball mass is obtained through the interaction between two massless gluons, in which the glueball mass depends on the QCD coupling constant g in the nonperturbative form.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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