Do we notice any significant difference in distribution and dynamics of dark matter in galaxies when n-body simulations are done with high or low-mass dark matter particles?
I didn't know that the mass resolution is that low. Is it a computational limit, and therefore can improve?What do you mean by high or low mass? If you are thinking of resolving the mass of the DM particles this way, you need to know that the resolution of the simulations is nowhere near the level of being able to do this. I think the highest resolution n-body simulations have particle masses on the order of 10^4 to 10^5 Msun.