Comment on "Anomalous heat conduction and anomalous diffusion in one-dimensional systems"

TL;DR

This paper critiques a recent study on heat conduction and diffusion in one-dimensional systems, arguing that their findings conflict with established principles regarding time scales in subdiffusive systems.

Contribution

It provides a critical analysis of Li and Wang's results, highlighting a potential violation of the non-existence of a characteristic time scale in subdiffusive systems.

Findings

Identifies a contradiction in Li and Wang's results

Highlights the importance of characteristic time scales in subdiffusive systems

Questions the validity of previous assumptions in anomalous heat conduction studies

Abstract

We comment on a recent paper by Li and Wang [Phys. Rev. Lett. 91, 044301 (2003)], and argue that their results violate the non-existence of a characteristic time scale in subdiffusive systems.