Corrigendum: Understanding charged vesicle suspensions as Wigner glasses: dynamical aspects (2021 J. Phys.: Condens. Matter33 104001)

We recently realized that there was an error in a line of the simulation code used for our article [1]. The error concerned the strength of the electric double layer (EDL) potential ${W_{ij}^{\mathrm{EDL}}}$ (only between particles of different species), resulting in smaller values as compared to the nominal ones. After having corrected the code, we have performed new simulations to quantify the impact of the error on the results presented in our article [1].

We have verified that there is no qualitative difference between the new simulations and the original ones, but only quantitative changes. Going into details, the error does not have any significant effect on the simulations at the two highest salt concentrations, $[NaI] = 10$ and $1\,\textrm{mM}$, corresponding to the smallest Debye lengths. For the two lowest salt concentrations, $[NaI] = 0.1$ and $0.01\,\textrm{mM}$ (largest Debye lengths), instead, the new simulations show an enhanced slowing down of the dynamics on increasing the vesicle volume fractions φ, eventually leading to an (estimated) glass transition at smallest φ values as compared to the original simulations.

To concretely illustrate this change, we first focus on the structural relaxation time τ_α . Figure 1 shows τ_α as a function of φ, for the two lowest salt concentrations, comparing results from the new simulations and the original data (see figure 5(b) of our article [1]). It is apparent that the growth of τ_α on increasing φ is much steeper for the new datasets, especially at the lowest salt concentration. Data for the two highest values of $[NaI]$ are not included in figure 1, as there are no detectable differences among the new simulations and the original ones.

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In figure 2, for the case of φ = 0.25, $[NaI] = 0.1\,\textrm{mM}$, we report the mean square displacement (MSD) (panel (a)) and the intermediate self scattering function (ISSF) (panel (b)), as defined in [1], comparing once again the new simulations with the original ones (see figures 1 and 2 of our article [1]). As it is apparent also here, glassy aspects of the system dynamics are more marked within the new corrected simulations.

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Overall, we can state that the key conclusion of our article [1] is not only confirmed but even strengthened by the new simulations: at low salt concentration, the investigated vesicles suspensions form Wigner glasses even at very low volume fractions.

There are no conflicts of interest to declare.