12.1 p=(0,0,0)

12.1.1 lattice dispersion relation

\[\begin{gather} \chi^2/d.o.f.=1.05096 \\ P[0]=-428.386\pm (4.7e+02) \\ \end{gather}\] {\[\begin{gather} C=\begin{pmatrix} 2.25e+05\\ \end{pmatrix} \end{gather}\]}