【摘要】 本文计算了n+1维双sinc-Gordon模型的高斯有效势,在高斯有效势近似下,证明:n≥3的模型是平凡的,n<3的模型存在一个Coleman相交点,临界耦合参数为 β_cr=2ⁿ⁺²π^（n+1）/2（α₁R+α₂R/4）^（3-n）/2/I（1/2（3-n））（α₁R+α₂R/16）更多还原

【Abstract】 The Gaussian effective potential of the double sine-Gordon model in n + 1 dim ensions is computed. Within the Gaussian approximation, we prove that the model is trivial for n ≥ 3 and there exists a Coleman phase transition point for n < 3, the critical coupling parameter reads:更多还原