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- Maxime Clusel, Jean-Yves Fortin, Peter C. W. Holdsworth
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2004

Order parameter fluctuations for the two-dimensional Ising model in the region of the critical temperature are presented. A locus of temperatures T(*) (L) and a locus of magnetic fields B(*) (L) areâ€¦ (More)

- Segun Goh, Keumsook Lee, Mooyoung Choi, Jean-Yves Fortin
- PloS one
- 2014

Social systems have recently attracted much attention, with attempts to understand social behavior with the aid of statistical mechanics applied to complex systems. Collective properties of suchâ€¦ (More)

- Nicolas Allegra, Jean-Yves Fortin
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2014

We present an application of the Grassmann algebra to the problem of the monomer-dimer statistics on a two-dimensional square lattice. The exact partition function, or total number of possibleâ€¦ (More)

Abstract. We present in this paper an exact study concerning a first order transition induced by an inhomogeneous boundary magnetic field in the 2D Ising model. From a previous analysis of theâ€¦ (More)

- Jean-Yves Fortin
- 2004

In this article we obtain some exact results for the 2D Ising model with a general boundary magnetic field and for a finite size system, by an alternative method to that developed by B. McCoy andâ€¦ (More)

Tunneling amplitude through magnetic breakdown (MB) gap is considered for two bands Fermi surfaces illustrated in many organic metals. In particular, the S-matrix associated to the wave-functionâ€¦ (More)

- Alain Audouard, Jean-Yves Fortin, David Vignolles, Vladimir Laukhin, Nataliya D. Kushch, Eduard B. Yagubskii
- Journal of physics. Condensed matter : anâ€¦
- 2016

de Haas-van Alphen oscillations of the organic metal Îº-(ET)2Cu(SCN)2 have been measured up to 55 T at liquid helium temperatures. The Fermi surface of this charge transfer salt is a textbook exampleâ€¦ (More)

De Haas-van Alphen oscillations are studied for Fermi surfaces (FS) illustrating the model proposed by Pippard in the early sixties, namely the linear chain of orbits coupled by magnetic breakdown.â€¦ (More)

- Jean-Yves Fortin
- Journal of physics. Condensed matter : anâ€¦
- 2013

We present a method to analyze the magnetic properties of frustrated Ising spin models on specific hierarchical lattices with random dilution. Disorder is induced by dilution and geometricalâ€¦ (More)

- Jean-Yves Fortin
- 2008

Abstract. We study the diffusion of a particle on a random lattice with fluctuating local connectivity of average value q. This model is a basic description of relaxation processes in random mediaâ€¦ (More)