Semiclassical soliton mass
= Semiclassical soliton mass
{title2=$M=M_{\rm cl}+\Delta M_{1\mathrm{loop}}+\cdots$}
A weak-coupling expansion of a <vacuum-subtracted soliton mass> begins with the classical energy and adds the <Gaussian fluctuation approximation>. For <Sine-Gordon theory>, $M=8m/\beta^2+\Delta M_{1\mathrm{loop}}+O(m\beta^2)$. The term of order $m$ includes both the vacuum-subtracted fluctuation frequencies and the appropriate <mass counterterm>.