共查询到17条相似文献,搜索用时 93 毫秒
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采用截断本征方程的方法研究2+1维SU(2)格点规范场的胶球质量及胶球波函数.计算结果表明五阶胶球质量△m/e 相似文献
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采用截断本征方程的方法研究2+1维SU(2)格点规范场的胶球质量及胶球波函数.计算结果表明:五阶胶球质量Δm/e2与五阶真空波函数的μ0一样没有表现出良好的收敛行为,在1/g2>0.8区间,胶球质量逐渐下降;胶球波函数μ0F和μ2F在1/g2>0.8时,趋于平稳,有较好的标度行为. 相似文献
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用改进的格点哈密顿量计算2+1维SU(2)规范场胶球质量 总被引:1,自引:1,他引:0
用改进的格点哈密顿量和截断本征方程法计算2+1维SU(2)规范场胶球质量,结果在广阔的耦合区内(1.0≤1/g2≤8.0)显示出极好的标度行为. 相似文献
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采用无规相近似(RPA)方法,用空心图作为试探波函数,利用Feymann?Hellman定理计算七阶2?+?1维SU(2?)格点规范场的胶球质量,在弱耦合区1/g2?=1.0?–?1.8胶球质量表现出良好的标度行为,基本趋于常数(m/e2?≈1.2?0±0?.0?1)?. 相似文献
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用改进的格点规范场哈密顿量和截断本征方程法计算2+1维U(1)规范场的0++胶球波函数,三阶结果比二阶结果的标度行为有了较大的改善. 相似文献
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提出变形集团展开法研究2+1维SU(3)格点规范场的胶球质量.这种方法采用相连空心图的线性组合作为试探波函数,并引入了Wilson圈图的平均值.计算结果表明,变形集团展开法的真空能量比普通集团展开法方法的真空能量低,0++胶球质量m/e2的二阶和三阶结果在耦合常数β=4.5—8.0区间,表现出较好的标度行为和良好的收敛性. 相似文献
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Glueball Spectrum is studied using an improved gluonic action on asymmetric lattices in the pure SU(3) gauge theory.The smallest spatial lattice spacing is about 0.08 fm which makes the extrapolation to the continuum limit more reliable.In particular.attention is paid to the scalar glueball mass which is known to have problems in the extrapolation.Converting our lattice results to physical units using the scale set by the static quark potential,we obtain the following results for the glueball masses:MG(0 )=1730(90)MeV for the scalar glueball mass and MG(2 )=2400(95)MeV for the tensor glueball. 相似文献
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The truncated eigenvalue equation of SU(N) lattice gauge theory is studied by using improved lattice gauge Hamiltonian with a proper truncation scheme that preserves the continuum limit. The calculations of vacuum state wavefunction and glueball mass of (2+1)-dimensional SU(2) theory up to third order are carried out, the results show the improvement of scaling behavior in deep weak coupling region. 相似文献
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The SU(2) glueball masses and the gluonic correlation functions in the JP = 0+,2+ and 0- channels are calculated from the cooled and uncooled gauge configurations. The improved action and the anisotropic lattice are used in this work. The instanton-induced attractive force in the 0+ channel and the repulsive force in the 0- channel are confirmed by the Monte Carlo simulation. There is evidence that the instanton vacuum contribution to the 0+ glueball mass is significant. 相似文献
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After considering its mixing with the glueball, we give a new mass relation for the meson nonet. According to this mass relation and the predicted mass of the pseudoscalar glueball given by lattice calculations and the effective Hamiltonian, the expected mass of the mixed pseudoscalar glueball is about 1.7 GeV. This result is helpful in the experimental search for the mixed isoscalar pseudoscalar glueball. η(1760) is discussed as a possible candidate for this type of particle. 相似文献
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The random phase approximation is applied to the coupled-cluster expansions of lattice gauge theory (LGT) Using this method,wavefuctions are approximated by linear combination of graplh consisting of only one connected wilson loop.We study the excited state energy and wavelunction in (2 1)-D SU(3) LGT up to the thired order,The glueball mass shows a good scaling behavior. 相似文献