摘要
我们考察了含无质量费米子格点规范理论中含θ参数的生成泛函、哈密顿量、真空态及真空能在手征变换下的变换性质,得出真空能是与θ无关的,即当存在无质量费米子时,格点规范理论中的θ真空隧道效应被压抑.
In the lattice gauge theory with massless fermions, the transformation properties of the generating functional, the Hamiltonian, the vacuum states and the vacuum energy depending on the θ parameter under the chiral transformation are investigated. The vacuum energy has no connection with θ , i. e. the tunnel effect between the θ vacua in lattice gauge theory is suppressed, when there are massless fermions.
出处
《华南师范大学学报（自然科学版）》
CAS
1991年第2期15-19,共5页
Journal of South China Normal University(Natural Science Edition)
关键词
无质量费米子
格点规范
θ真空
隧道效应
费米子
massless fermion
lattice gauge
θ vacuum
tunnel effect
chiral transformation
