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Date: Mon, 09 Aug 2004 14:37:43 -0400 (EDT)
From: CORINA BARBU <cmb411@psu.edu>
Subject: fixed atoms --> energy not constant
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       Hello!

I fix some atoms in a molecule during a MD simulation with no thermostat. I
notice that the energy is not conserved(total energy goes up by a lot during
run). However, everything seems to be OK when I do not fix any atoms in the
same molecule. 

Does anybody know what happens??

Corina