论文标题
扭结和孤子的半古老能量密度
The semiclassical energy density of kinks and solitons
论文作者
论文摘要
我们使用量子平台中的量子和协变量的重新归化技术，计算$ ϕ^4 $理论中的扭结能量校正，以$ 1+1 $尺寸为单位$ 1+1 $尺寸。对于对能量的半经典校正，我们恢复已知的结果。我们的分析强调了标量场理论的保守应力张量的定义，以$ 1+1 $尺寸。
We compute semiclassical corrections to the energy density of kinks in $ϕ^4$ theory and of solitons in the sine-Gordon model in $1+1$ dimensions, using local and covariant renormalization techniques from quantum field theory in curved spacetimes. For the semiclassical correction to the energy, we recover the known results. Our analysis highlights a subtlety in the definition of a conserved stress tensor for scalar field theories in $1+1$ dimension.
