2009
DOI: 10.1239/jap/1261670696
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Scaling Limit for a Drainage Network Model

Abstract: We consider the two dimensional version of a drainage network model introduced by Gangopadhyay, Roy and Sarkar, and show that the appropriately rescaled family of its paths converges in distribution to the Brownian web. We do so by verifying the convergence criteria proposed by Fontes, Isopi, Newman and Ravishankar.

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Cited by 21 publications
(56 citation statements)
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“…We should mention here that the Brownian web appears as a universal scaling limit for various network models (see Fontes et al [9], Ferrari, Fontes and Wu [8], Coletti, Fontes and Dias [5]). It is reasonable to expect that with suitable modifications our method will give similar results in other network models.…”
mentioning
confidence: 97%
“…We should mention here that the Brownian web appears as a universal scaling limit for various network models (see Fontes et al [9], Ferrari, Fontes and Wu [8], Coletti, Fontes and Dias [5]). It is reasonable to expect that with suitable modifications our method will give similar results in other network models.…”
mentioning
confidence: 97%
“…However, FKG property is difficult to verify for many models where paths have complex interactions, e.g., Howard's model [14], discrete directed spanning forest [20], directed spanning forest [2,8] etc. Among these, for Howard's model, only a partial version of the FKG property is proved till now [5]. The main contribution of this paper is that, we propose an alternate method for verification of (B2) based on a bound for expected first collision time and show that this method is applicable for many non-crossing path models with certain Markovian properties and homogeneity assumptions (see Proposition 3.2 for detail).…”
Section: Main Result: An Alternative Verification Of (B2)mentioning
confidence: 99%
“…Let X be the collection of all paths obtained by following the edges and for γ, σ > 0, let X n = X n (γ, σ) be the collection of scaled paths with normalization constants γ, σ. Coletti et al [5,6] proved that, for γ = 1 and σ = σ 0 (p) with σ 0 (p) as given by σ 0 (p) = (1−p)(2−2p+p 2 ) p 2 (2−p) 2 1/2 , X n converges in distribution to the Brownian web. Again, to verify Condition (B2) they proved a partial FKG inequality for the Howard's model.…”
Section: Howard's Modelmentioning
confidence: 99%
“…With the ingredients developed above, we can now follow ideas developed in [11] for instance. Recall that τ R− = inf{k ∈ N, D k ≤ 0} and define θ = inf{t ≥ 0, B t = −d}.…”
Section: Step 4: Introduction Of An Auxiliary Markov Chainmentioning
confidence: 99%