Looking for zero frequencies

An Ghysels an.gh... at gmail.com
Fri Apr 9 18:08:37 CEST 2010


Dear Carlo,

That's a common misunderstanding. But one can proof analytically that
the Hessian of a translational invariant system has 3 zero
eigenvalues, optimized or not. See eg Ghysels et al. JCP 127, 164108
(2007)

An



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