2001•理论物理通讯：英文版Requires access
Thied—Order Approximation of 0^＋＋ Glueball Mass and Wavefunction of （2＋1）—Dimensional SU（3） Lattice Gauge Theory
LIJie-Ming, CHENQi-Zhou
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Abstract
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.