Phonon Boltzmann equation non-local in space and time: the partial failure of the generalized Fourier law

Understand

The purpose of this note is to clarify the solution of the non-local Peierls Boltzmann equation found by Hua and Lindsay (Phys.

• Rev.
• B 102, 104310 (2020)).
• They used methods of Cepellotti and Marzari.