Spin-wave velocity
= Spin-wave velocity
{title2=$c$}
The spin-wave velocity is the slope $c=\lim_{k\to0}\omega(k)/k$ of a linearly dispersing spin wave. For the leading square-lattice Heisenberg antiferromagnet continuum theory, $c=2\sqrt2JSa$.
= Spin-wave velocity
{title2=$c$}
The spin-wave velocity is the slope $c=\lim_{k\to0}\omega(k)/k$ of a linearly dispersing spin wave. For the leading square-lattice Heisenberg antiferromagnet continuum theory, $c=2\sqrt2JSa$.