GROMACS version: 2023.5
GROMACS modification: No
I was just watching some explanation regarding molecular dynamics and saw that the cut off distance must be less than or equal to half the size of the box so that the force is calculated on the atom rather than an image of an atom outside PBC.
I recently performed a MD simulation where i had my cut-off distance as 1.2nm and the box size as 1.3nm but the simulation went smoothly without any errors unlike in this post - The cut-off length is longer than half the shortest box vector or longer than the smallest box dia
I’m just an undergrad learning and I want to know if i have misunderstood something here, Thank you.