deletions | additions       diff --git a/Massive coupling.tex b/Massive coupling.tex  index 61c0991..f047693 100644  --- a/Massive coupling.tex  +++ b/Massive coupling.tex 
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It is simple to deduce that lattices of particles of relative motion differ for a Lorentz transformation. Now, combining \eqref{eq:mass} and \eqref{eq:wave}, we have:  \begin{equation}  E^2 = m^2 c^4 + p^2 c^2 \leftrightarrow \omega^2 = \omega_0^2 + k^2 c^2  \end{equation} We observe that the second equation describe a set of pendulums coupled through springs. We can suppose that the massive coupling is a \emph{transverse coupling} between two or more chains of IQuO of $\Xi$.\\   So we picture the \emph{massive} field using the following figure:\\   (figure)