[gmx-users] reaction field and permittivity

[Johnny Lu]

Dear Users,

I used mdp file at the following url for NVE vacuum simulation
http://shourjya.thinkbiosolution.com/wp-content/uploads/2013/02/nvevaccmdp1.txt

Does epsilon_rf affect the simulation?

epsilon_rf is dielectric constant beyond the cut-off.

Since I set 0 for all the cut-off, the cut-off should be infinity. Does
that means the epsilon_rf never get used ?

Also, epsilon_r = 1. So the simulation will always use the vacuum
permittivity when calculating coulombic interactions?

Thank you for your help.