1) fermion condensates
费米子真空凝聚
1.
The Wilson fermion condensates in the lattice Schwinger model is calculated by using improved Hamiltonian and variational method.
用改进的哈密顿量和变分法计算格点(1+1)维QED(Schwinger模型)中Wilson费米子真空凝聚<>,结果(同使用未改进的哈密顿量的计算结果相比较)与Wilson参数r的依赖关系明显地减小了。
2) fermion condensate
费米子凝聚
1.
The calculation of Dirac operator determinant in non-Abelian gauge theory is generalized from only containing hard fermion mass to that containing momentum dependent fermion self energy,and the calculation of determiant and fermion condensate is generalized to the case with arbitrary external gauge fields.
将非阿贝尔规范理论中狄拉克算符行列式的计算从传统的只能含有硬费米子质量项的情况推广到可以含有动量相关的费米子自能的情况,并且行列式与费米子凝聚的计算都被推广到使之能够含有任意的外规范场。
3) vacuum condensate
真空凝聚
1.
Based on Dyson- Schwinger Equations of quark propagator, we calculate quark-gluon mixed vacuum condensates 〈0|∶g_sσ_ μν G_ μν q∶|0〉 and quark vacuum condensates 〈0|∶q∶|0〉 which are not only related to virtuality of quark in vacuum state but also characterize the space width of quark distribution in the vacuum.
基于夸克传播子的DysonSchwinger方程,计算了夸克胶子混合真空凝聚和夸克真空凝聚。
2.
It is shown that the vacuum condensates of d=6 operators still have notable effects.
在势模型的框架下,通过粲夸克偶素及底夸克偶素能谱的计算,研究了由高维夸克胶子凝聚描述的非微扰QCD效应结果表明:六维算符真空凝聚仍有明显的贡献;单圈微扰修正在散射和湮灭过程中的贡献几乎相同,但与同一级的非微扰QCD的贡献符号相反
4) vacuum condensation
真空凝聚
1.
By solving the Gap equation, we found that the contribution of the modification to quark-antiquqrk condensation is obvious, though the main results of vacuum condensation remain.
通过计算 ,发现这种对大r行为的修改虽然能够使真空凝聚保持在r2 关联核下的主要性质 ,但它的影响仍然是显著的 。
5) Fermi condensate
费米凝聚体
1.
The achievement for the molecular BEC and Fermi condensate will shed much light on our understanding of the mechanism of the high-temperature superconductivity.
第二章通过对费米凝聚体实验的描述,阐明了磁场Feshbach共振的基本思想,即通过外加磁场来调节原子间的相互作用强度,并给出了BCS-BEC渡越过程的理论模型。
补充资料:费米子
| 费米子 fermion 遵从费米 - 狄拉克统计的微观粒子。费米子的自旋为半奇数1/2,3/2,…,例如电子、质子、中子等。由奇数个费米子组成的复合粒子的自旋也是半奇数,因而它们也是费米子 ,如一切具有奇数个 核子的原子核( 3He、235U 等原子核)。由相同费米子组成的系统的波函数,对于其中任意两个粒子坐标置换,是反对称的,由此可得出费米子还遵从泡利不相容原理。 |
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