论文标题
非扰动真空中的准粒子
Quasiparticles in nonperturbative vacuum
论文作者
论文摘要
SU（2）Yang-Mills理论中的非扰动真空的模型提出了与非线性旋转型场结合的模型。通过类比与量子染色体动力学中的阿贝尔磁单极优势相比，假定对这种真空的主要贡献来自该理论中存在的二曲霉溶液所描述的准粒子。使用能量接近无穷大的准粒子数量密度的行为的假设，我们得出了这种非扰动真空的能量密度的近似表达，而这种非扰动真空的能量密度被证明是有限的，这与扰动真空的无限能量密度不同。使用非扰动能量密度的表达式中出现的参数的特征值，这表明该密度可能是与爱因斯坦宇宙学常数相关的能量密度的顺序。提出了旋转场自偶联常数为准粒子之间的特征距离的物理解释。简要讨论了正在考虑的非扰动真空模型和确定其压力的实验验证问题。
The model of nonperturbative vacuum in SU(2) Yang-Mills theory coupled to a nonlinear spinor field is suggested. By analogy with Abelian magnetic monopole dominance in quantum chromodynamics, it is assumed that the dominant contribution to such vacuum is coming from quasiparticles described by dipolelike solutions existing in this theory. Using an assumption of the behavior of the number density of quasiparticles whose energy approaches infinity, we derive an approximate expression for the energy density of such nonperturbative vacuum, which turns out to be finite, unlike an infinite energy density of perturbative vacuum. Using characteristic values of the parameters appearing in the expression for the nonperturbative energy density, it is shown that this density may be of the order of the energy density associated with Einstein's cosmological constant. The physical interpretation of the spinor field self-coupling constant as a characteristic distance between quasiparticles is suggested. The questions of experimental verification of the nonperturbative vacuum model under consideration and of determining its pressure are briefly discussed.
