Effect of Random Impurities on Fluctuation-Driven First Order Transitions

Details Effect of Random Impurities on Fluctuation-Driven First Order Transitions Effect of Random Impurities on Fluctuation-Driven First Order Transitions

1995-11-23

arxiv.org/abs/cond-mat/9511112v1

Physics

Condensed Matter

13 pp., LaTeX

Scientific paper

10.1088/0305-4470/29/9/006

We analyse the effect of quenched uncorrelated randomness coupling to the local energy density of a model consisting of N coupled two-dimensional Ising models. For N>2 the pure model exhibits a fluctuation-driven first order transition, characterised by runaway renormalisation group behaviour. We show that the addition of weak randomness acts to stabilise these flows, in such a way that the trajectories ultimately flow back towards the pure decoupled Ising fixed point, with the usual critical exponents alpha=0, nu=1, apart from logarithmic corrections. We also show by examples that, in higher dimensions, such transitions may either become continuous or remain first order in the presence of randomness.

Affiliated with

Also associated with

No associations

Rating

Effect of Random Impurities on Fluctuation-Driven First Order Transitions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Effect of Random Impurities on Fluctuation-Driven First Order Transitions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of Random Impurities on Fluctuation-Driven First Order Transitions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-465058