(1.5) We fix an algebraically closed field $k$ of characteristic $0$ and we set $R=k[\negthinspace[t]\negthinspace]$ and $K=k(\negthinspace(t)\negthinspace)$. We also fix an algebraic closure $K^{a}$ of $K$. We denote by $\mathrm{ord}_{t}$ the $t$-adic valuation on $K$ and we define an absolute value $|\cdot|$ on $K$ by setting $|a|=\exp(-\mathrm{ord}_{t}a)$ for every $a\in K^{\times}$. This turns $K$ into a complete non-archimedean field. We denote by $(\cdot)^{\mathrm{an}}$ the analytification functor from the category of $K$-schemes of finite type to Berkovich’s category of $K$-analytic spaces. For every $R$-scheme $\mathscr{X}$, we will denote by $\mathscr{X}_{k}=\mathscr{X}\times_{R}k$ and $\mathscr{X}_{K}=\mathscr{X}\times_{R}K$ its special and generic fiber.