Dear all,

  I would like to understand better where is the precision leak in the
calculation of Hamiltonian matrix (H) and Density matrix (Dscf) in
siesta.
I am using the test run of iron, included in the directory siesta/Tests/fe.
The bcc symmetry of iron would automatically rule out matrix elements of
the full real-space hamiltonian between different on-site real-type
d-orbitals.
This happens down to the 4th decimal, but I think this is a very bad
performance in terms of precision.
What do you think is the matter here??

Giovanni


-- 
Giovanni Borghi
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PhD Student
Scuola Internazionale Superiore di Studi Avanzati,
via Bonomea, 265
34136 Trieste
ITALY
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