The Green-Kubo relation for finding thermal conductivity in Molecular Dynamics contains an expression that represents the integration of the heat current auto-correlation function and in LAMMPS manual (https://lammps.sandia.gov/doc/compute_heat_flux.html) it is shown that the heat current is given in terms of energy and stress.
Any source where I can find a derivation or a topic talking about this representation ?
Abdelkader Mohamed Elsayed
Please Go To This Link:
https://en.wikipedia.org/wiki/Stress–energy_tensor
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