Re: [ESPResSo-users] Pressure Problem

[Rudolf Weeber]

Hi,
On Tue, Jul 03, 2012 at 05:15:39PM -0400, Wozniak, Matthew C wrote:
> I'm a computatoinal physics student and I am learning to use ESPResSo by 
> first studying the LJ-tutorial provided by the website. The tutorial 
> simulates an LJ-system whose parameters cause it to operate near the triple 
> point. When I analyze the total pressure during each sample, the pressure 
> comes out to be negative. How can pressure be negative? Why are these 
> pressures negative?
A negative pressure means that the system would contract, if you would let it 
change volume.

Regards, Rudolf