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\subsection{The Universe's spacetime field}  So the transverse coupling builds a massive lattice in $\Xi$ which represents a massive particle $\Xi_i^0$.  The particles walking across the universe are structured like coupling of chains $\Xi_i$ of intrisic quantum oscillators, belonging to the basic field $\Xi$ (see structure hypothesys).\\ hypothesys). Thus we think that the particle is coincident with a particular structure of IQuO chains coupling of base fields $\Xi_i^0$, $\Xi_i$.\\  The birth of massive particles in the scalar field $\Xi$ $\Xi^0$  of the object-universe or the bird birth  of $\underline{\Xi}_i$-lattices $\Xi_i$-lattice  means that the universe can be expressed by $\Xi$ $\Xi^0$  or by $\underline{\Xi}$.\\ $\Xi$.\\  The field that represents the universe as a spacetime object, that we call \emph{universe's spacetime field}, is generically denoted by $\underline{\underline{\Xi}} $\Xi_U  \equiv (\Xi, \underline{\Xi})$.\\ (\Xi^0, \Xi)$.\\  But we must not believe that $\Xi$ is a sort of elastic \emph{ether} pervading an absolute space: we remember that this has been refuted by the theory of relativity, because it is itself the spacetime.\\  Remembering that coupling massive introduces a local FR reference system  $\Sigma_0$ with a \emph{motion} in the proper time $\omega_0$ and the birth of a \emph{spatial dimension} $\lambda_0$, then we can consider the universe as set $\Sigma_U$ of the local reference frames $\Sigma_0$, systems $\Sigma_i$,  associated with massive particles.\\ The symmetry group of the universe based on the IQuOs' lattices is the Poincare group.\\  For every set of particles, we are able to build a whole FR RS  with a its proper time $\tau_c$ and a its proper space $\lambda_c$, that are properties of the FR RS  itself. Now, we can build a whole FR RS  for every galaxy and extend it to the whole universe. The FR RS  of the universe coincides with the comovent FR [4], RS \cite{zeldovic1983},  with a proper cosmic time, that is the age of the universe.\\ universe. The comovent RS coincides with the spacetime lattice of the universe asoociated to the field $\Xi_U$.\\  At the other hand to every set of identical particles with mass $m_i$ we can connect a lattice of IQuO's chains (with a further coupling to the structure of $\Xi$), that we call $U_i$, with spatial rate $\lambda_i$ and time rate $\tau_i$ given by:  \begin{equation}\label{eq_iquolattice}  \left\{\begin{matrix}