2 papers
cond-mat.stat-mech2025
The nuts and bolts of gauge invariance of heat transport
Stefano Baroni
In this work I revisit the notion of gauge invariance in thermal transport and show, in the simplest and most general possibile terms, why heat conductivity is unaffected by the sp…
cond-mat.stat-mech2024
Green and Kubo forge the arrow of time
Stefano Baroni
Transport theory describes the response of a macroscopic current to a thermodynamic force, thus producing entropy and apparently violating time-reversal symmetry. In this note I re…