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Tuesday 02 May 2017, 16:15-17:15
Sharpness of the phase transition for random-cluster and Potts model via decision trees
- đ¤ Speaker: Aran Raoufi (Geneva)
- đ Date & Time: Tuesday 02 May 2017, 16:15 - 17:15
- đ Venue: MR12, CMS, Wilberforce Road, Cambridge, CB3 0WB
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Perla Sousi
Abstract
We prove that the phase transition of random-cluster and Potts models on any transitive graph is sharp. That is, we show that for $p < p_c$, the probability that the origin is connected by an open path to distance $n$ decays exponentially fast in $n$. This would also imply the sharpness of phase transition for the Potts model. A main ingredient of the proof comes from the theory of decision trees. An inequality on decision trees on monotonic measures is obtained which generalises the OSSS inequality on product spaces. This talk is based on works with H. Duminil-Copin and V. Tassion.
Series This talk is part of the Probability series.
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