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I know this is an old topic, but is there any improvement in the newest vasp.5.2 version about the rules of setting the smass keyword?

The vasp manual says for liquids something like 'phonon'-frequencies might be obtained from the spectrum of the velocity auto-correlation function (VACF). I have got the VACF spectrum, but how can I get the thing like 'phonon'-frequencies ?

the use of SMASS has not been changed in vasp.5.2.
the vibrational spectrum can be obtained via FT from the velocity autocorrelation function
[ Edited Fri Apr 02 2010, 10:32AM ]

Well, how about the second question?? somebody has got to help me.

The vasp manual says for liquids something like 'phonon'-frequencies might be obtained from the spectrum of the velocity auto-correlation function (VACF). I have got the VACF spectrum, but how can I get the thing like 'phonon'-frequencies ?

<span class='smallblacktext'>[ Edited Fri Apr 02 2010, 10:31AM ]</span>