Trans conformer 2D 2D + 23BM 2D from Ref. 2D + 23BM from Ref. FIG. : Left: population of the S1 state over 1 ps of dynamics using CT-TSH (upper panel) and TSH-ED (lower panel). Right: probability of forming the trans conformer over 1 ps of dynamics using CT-TSH (upper panel) and TSH-ED (lower panel), compared to some reference MCTDH results extracted from Ref. for the 2D model (continuous thin black lines) and for the 2D + 23BM model (dashed thin black lines). The colored lines represent different models, i.e., the 2D system without the environment (in green) and the 2D + 23BM system+bath model (in purple). FIG. 9: Nuclear kinetic energy along the torsion coordinate ϕ (left) and along the coupling mode q (right) expressed in Hartree (E h ) as function of time using CT-TSH (upper panels) and TSH-ED (lower panels) over 1 ps of dynamics. The color code is the same as in Fig. .