fluctuations of different CVs.

Ross, Sun sunshou... at yahoo.com.cn
Wed May 25 14:31:17 UTC 2011


Hi everyone,
In general, di
fferent CVs fluctuate in wells of di
erent size, it is
important to defi
ne one scaling factor 'scf
' for each component, so
that 'fluctuations/scf=hill width' as said in CPMD manual. And I am
wondering, how cp2k handles this problem. Or, should I just set each
fluctuation to the same value?

e.g.: I got two different SCALE 0.02 and 0.01. Should I change 0.01
into 0.02? BTW, 0.02 and 0.01are fluctuations of eachCV.
       MIN_DISP 0.03
      &METAVAR
        LAMBDA 5.0
        MASS 1000.0
        SCALE 0.02  # Hill width
        COLVAR 1
      &END METAVAR
      &METAVAR
        LAMBDA 6.0
        MASS 100.0
        SCALE 0.01   # Hill width
        COLVAR 2
      &END METAVAR

Thanks in advance. Looking forward for your reply.

Best regards


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