NVT ensemble

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Category: NVT ensemble

== NVT ensemble ==
The NVT ensemble is a statistical ensemble that is used to study material properties under the conditions of a 
constant particle number N, constant volume V and a temperature fluctuating around an equilibrium value T.
This page describes to sample the NVT ensemble from a molecular dynamics run. 

== Instructions for setting up a NVT ensemble ==
There are 4 possibilities to simulate the NVT ensemble. The stochastic Andersen thermostat or Langevin thermostat,
the deterministic Nose-Hoover thermostat or Multiple Anderson thermostats can be used.

NVT ensemble Andersen Langevin Nose-Hoover Multiple Andersen
MDALGO 1 3 2 13
additional tags ANDERSEN_PROB LANGEVIN_GAMMA SMASS NSUBSYS, TSUBSYS, PSUBSYS
The user is not allowed to set ISF>2 because then the volume of the simulation would be allowed to change
and the simulation would not result in a NVT ensemble. Setting ISIF=0 will speed up the calculation because the stress
tensor is not computed.