[QE-users] Negative pressure convention

[valeria arteaga muñiz]

Hello everyone,

I am trying to run some MD with pw.x, and I am modifying the lattice parameter of my cell until I reach 60 kBar. However, I was noticing that it printed some negative pressures. I was wondering if the convention is that negative pressure indicates expansion, or what would be the case?



Thank you in advance,

Valeria

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