期刊
PROGRESS OF THEORETICAL PHYSICS
卷 128, 期 2, 页码 373-396出版社
PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
DOI: 10.1143/PTP.128.373
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology in Japan [23540311]
- Grants-in-Aid for Scientific Research [23540311] Funding Source: KAKEN
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.
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