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Mean-Field Bound on the 1-Arm Exponent for Ising Ferromagnets in High Dimensions

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/85989

Title: Mean-Field Bound on the 1-Arm Exponent for Ising Ferromagnets in High Dimensions
Authors: Handa, Satoshi Browse this author
Heydenreich, Markus Browse this author
Sakai, Akira Browse this author →KAKEN DB
Keywords: Ising model
1-arm exponent
Random-current representation
Issue Date: 18-Oct-2019
Publisher: Springer
Journal Title: Sojourns in Probability and Statistical Physics - I(Springer Proceedings in Mathematics & Statistics)
Volume: 298
Start Page: 183
End Page: 198
Publisher DOI: 10.1007/978-981-15-0294-1_8
Abstract: The 1-arm exponent ρ for the ferromagnetic Ising model on Zd is the critical exponent that describes how fast the critical 1-spin expectation at the center of the ball of radius r surrounded by plus spins decays in powers of r. Suppose that the spin-spin coupling J is translation-invariant, Zd-symmetric and finite-range. Using the random-current representation and assuming the anomalous dimension η=0, we show that the optimal mean-field bound ρ≤1 holds for all dimensions d>4. This significantly improves a bound previously obtained by a hyperscaling inequality.
Type: article (author version)
URI: http://hdl.handle.net/2115/85989
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 坂井 哲

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