Additive and cancellative interacting particle systems by David Griffeath PDF

By David Griffeath

ISBN-10: 354009508X

ISBN-13: 9783540095088

Griffeath D. Additive and Cancellative Interacting Particle structures (LNM0724, Springer, 1979)(ISBN 354009508X)(1s)_Mln_

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Let T t = m i n { s -> t : 0 ~ ~s } , and note that Zd {lira sup ~t (0)= I} = lira lira {Tt~ It,u]} . For 0 -< t < u , b y t h e t ~ ~ t~ u--~ Markov property and monotonicity, u s[J ~ Sd(o ) t ds] = ]u f P(T t dr, ~ Tt zd ~ dA) E[ fo u - r ~2(0) ds] t u t Zd 7 P( t dr. Thus P(q:t * I t , u ] ) last l e m m a , t, [t'u])E[~ 0 u dAl u = P(Tte For each fixed and p(zt/o). Let u(t) denote the right side of this last inequality. 4) Start Thus P(i~t°/s) du Z d--t- = -u k . A0 (%t) ' it will be absorbed ° Zd ~s (0) ds] Zd (01 ds] .

Thus, the clusters of configuration Ac . O n e relevant quantity for systems which cluster is the asymptotic m e a n cluster size. Let C(A) , A ~ S , C(A) = lie n--~ A or entirely in are the connected components of A or be given by (Zn) d l{clusters of A in bn(0)} I provided the limit exists (undefined otherwise) • For the one-dimensional basic ~8 Z8 ' the asymptotic growth of C(~ t ) can be derived voter model starting from explicitly. First w e need a general result which states that mixing is preserved by local additive systems at any time to the limit as t~ t < ~o .

The discrete time analogue of Theorem (Z. 6) is proved by Bramson and Griffeath (1978a); similar but more sophisticated inequalities for the stochastic Ising model (cf. 3)) have been obtained by Holley and Stroock (1976b). R. Arratia (private communication) has s h o w n that v satisfies a strong form of exponential mixing w h e n the hypotheses of (Z. 6) are satisfied. Pointwise ergodic theorems for particle systems were first obtained by Harris (1978); w e note that Theorem (Z. 8) can also be proved by generalizing the criterion he gives for lineal additive systems.

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Additive and cancellative interacting particle systems by David Griffeath

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