Time evolution of the surface density profile of the disk (left panels), its mass (middle, black circles), the cavity’s expansion rate (middle, blue circles), and the semimajor axis of a Neptune-mass planet (right). All results are shown in the PE-dominated disk phase. The planet is released at different times throughout the simulations. The three rows of panels correspond to runs with different: slopes of the disk’s initial surface density profile (1), PE mass-loss rates (2), and disk aspect ratios (3; see Table 2). The thick solid and thin dashed curves across the panels show results for run-fid and run-Id in the top row, run-ph and run-pl in the middle row, and run-al and run-ah in the bottom row.