On the speed of heat

V. Bertola, E. Cafaro

Research output: Contribution to journalArticlepeer-review


A formalism based on the concept of transport velocity allows writing the energy equation for a rigid conductor with heat propagation in Liouvillean form. Such formalism leads to reconsider the well-known paradox of infinite propagation velocity in diffusing systems and suggests a deterministic particle approach for the heat conduction equation instead of the standard random walk description. Some straightforward thermodynamic consequences and fluid-dynamic analogies are derived. (c) 2007 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)14
Number of pages4
JournalPhysics letters a
Issue number1
Publication statusPublished - 10 Dec 2007

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