1 (ϕ, q, t)| 2 . Therefore, when the electronic conditional state |Φ(t; ϕ, q) is expanded in the same basis, the expansion coefficients are χ (d) k (ϕ, q, t)/χ(ϕ, q, t) by virtue of the exact factorization . Using these coefficients and replacing the integration over r of Eqs. ( ) and ( ) with a sum over the diabatic states yields the (ϕ, q, t)-dependent TDPES and TDVP. Studying the evolution of their behavior in time allows one to qualitatively interpret and justify the dynamics of the nuclear wavefunction. To compute the TDPES and the TDVP we used the Exact Factorization Analysis Code (EFAC) .