[Pw_forum] Hessian matrix

[Stefano Baroni]

The Hessian matrix is the matrix of interatomic force constants, calculated by ph.x using density-functional perturbation theory - SB

On Sep 28, 2010, at 2:43 PM, Ihsan Erikat wrote:

> Dear all
> after performing bfgs relaxation where can I find Hessian matrix . I try to search in the outdirectory (tmp) at prefix.hess file but I can`t find it, where I can find this matrix .
> best regards
> Ihsan Erikat
> Jordan University
> 
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---
Stefano Baroni - SISSA  &  DEMOCRITOS National Simulation Center - Trieste
http://stefano.baroni.me [+39] 040 3787 406 (tel) -528 (fax) / stefanobaroni (skype)

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