Comment on "Anomalous Discontinuity at the Percolation Critical Point of Active Gels"

10 May 2016  ·  Pruessner Gunnar, Lee Chiu Fan ·

In their recent work Sheinman et al. [Phys. Rev... Lett. 114, 098104 (2015)] introduce a variation of percolation which they call no-enclaves percolation (NEP). The main claims are 1) the salient physics captured in NEP is closer to what happens experimentally; 2) The Fisher exponent of NEP, is $\tau=1.82(1)$; 3) Due to the different Fisher exponent, NEP constitutes a universality class distinct from random percolation (RP). While we fully agree with 1) and found NEP to be a very interesting variation of random percolation, we disagree with 2) and 3). We will demonstrate that $\tau$ is exactly $2$, directly derivable from RP, and thus there is no foundation of a new universality class. read more

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Soft Condensed Matter Statistical Mechanics