[gmx-users] OCP simulations

[Argyrios Karatrantos]

hi David 
A one-component plasma (OCP) is a system in which a single species of charged particle
moves in a uniform backround of the opposite charge.  Systems of this nature exist in the dense stellar matter of white-dwarf stars.
when the screening parameter of the screened Coulomb goes to zero then we have the Coulombic one-component plasma
you are right , in gromacs 3.3.1 , it is possible to use a uniform neutralizing backround in PME to  compensate for a system with a net backround charge. it is not necessary to add counterions to neutralize the system.
thank you very much