标题： 中心涡流和k-弦 显示英文标题

标题： Center vortices and k-strings

摘要： 我们计算了涡旋对 SU($N$) 规范理论的$k$-弦张力的贡献。我们推导出表面密度，以重现最近从晶格数值模拟中获得的正弦尺度和卡西米尔尺度公式。我们发现这些密度需要在$N$中线性增长，这反过来表明涡旋场景很难再现大$N$下的禁闭物理。 显示英文摘要

摘要： The vortex contribution to the $k$-string tensions is computed for SU($N$) gauge theories. We deduce the surface densities needed to reproduce the sine scaling and the Casimir scaling formulae, recently obtained from numerical simulations on the lattice. We find that such densities need to grow linearly in $N$, which in turn suggests that the vortex scenario can hardly reproduce the physics of confinement at large $N$.