Lyapunov exponents, one-dimensional Anderson localisation and products of random matrices

Alain Comtet, Christophe Texier, Yves Tourigny

Research output: Contribution to journalArticle (Academic Journal)peer-review

17 Citations (Scopus)
282 Downloads (Pure)


The concept of Lyapunov exponent has long occupied a central place in the theory of Anderson localisation; its interest in this particular context is that it provides a reasonable measure of the localisation length. The Lyapunov exponent also features prominently in the theory of products of random matrices pioneered by Furstenberg. After a brief historical survey, we describe some recent work that exploits the close connections between these topics. We review the known solvable cases of disordered quantum mechanics involving random point scatterers and discuss a new solvable case. Finally, we point out some limitations of the Lyapunov exponent as a means of studying localisation properties.
Original languageEnglish
Article number254003
Number of pages20
JournalJournal of Physics A: Mathematical and Theoretical
Issue number25
Publication statusPublished - 4 Jun 2013

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