Strong Disorder Fixed Point in Absorbing-State Phase Transitions

Jef Hooyberghs, Ferenc Iglói, Carlo Vanderzande

Research output: Contribution to journalArticle

13 Citations (Scopus)


The effect of quenched disorder on nonequilibrium phase transitions in the directed percolation universality class is studied by a strong disorder renormalization group approach and by density matrix renormalization group calculations. We show that for sufficiently strong disorder the critical behavior is controlled by a strong disorder fixed point and in one dimension the critical exponents are conjectured to be exact: [Formula presented] and [Formula presented]. For disorder strengths outside the attractive region of this fixed point, disorder dependent critical exponents are detected. Existing numerical results in two dimensions can be interpreted within a similar scenario.

Original languageEnglish
Number of pages1
JournalPhysical review letters
Issue number10
Publication statusPublished - Jan 1 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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