Our result shows that after considering the direct instanton effect, the mass of glueball is greatly reduced.
结果显示在考虑了瞬子效应后，胶球的质量被大大降低。
2
The quantum tunneling of a vortex in an annular Josephson junction is investigated by using the periodic instanton method.
利用周期瞬子方法从理论上研究了环状偏流约瑟夫森结中的单个涡旋隧穿特性。
3
The effect of the external magnetic field on macroscopic quantum tunneling in biaxial single domain antiferromagnetic particles is studied with the help of the instanton method.