Phys. Rev. E 78, 032101 (2008) [4 pages]Weakly disordered absorbing-state phase transitionsReceived 23 May 2008; published 2 September 2008 The effects of quenched disorder on nonequilibrium phase transitions in the directed percolation universality class are revisited. Using a strong-disorder energy-space renormalization-group method, it is shown that for any amount of disorder the critical behavior is controlled by an infinite-randomness fixed point in the same universality class of the random transverse-field Ising models. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.78.032101
DOI:
10.1103/PhysRevE.78.032101
PACS:
02.50.Ey, 05.70.Jk, 64.60.ae
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