格点Weinberg-Salam模型中的相变附近
The vicinity of the phase transition in the lattice Weinberg - Salam Model
摘要：
我们研究了在$300$ GeV附近Higgs质量的无费米子格点Weinberg-Salam模型.在相图上存在物理Higgs相和非物理对称相之间的相变附近，在那里，标量场的涨落变强，而Nambu磁单极是稠密的。根据我们的数值计算结果（得到的晶格尺寸高达$20^3\times 24$）的紫外截止模型中的最大值不能超过$1.4$ TeV左右的值。
英文摘要：
We investigated the lattice Weinberg - Salam model without fermions for the Higgs mass around $300$ GeV. On the phase diagram there exists the vicinity of the phase transition between the physical Higgs phase and the unphysical symmetric phase, where the fluctuations of the scalar field become strong while Nambu monopoles are dense. According to our numerical results (obtained on the lattices of sizes up to $20^3\times 24$) the maximal value of the ultraviolet cutoff in the model cannot exceed the value around $1.4$ TeV.
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