Publications related to Non-gaussianity of the critical 3d Ising model

Nonlinear Midinfrared Photothermal Spectroscopy Using Zharov Splitting and Quantum Cascade Lasers

Hatice Altug, Shyamsunder Erramilli, Mi Kyung Hong

We report on the Mid-infrared nonlinear photothermal spectrum of the neat liquid crystal 4-octyl-4'-cyanobiphenyl (8CB) using a tunable Quantum Cascade Laser (QCL). The nonequilibrium steady state characterized by the nonlinear photothermal infrared respon ...

2014

Spin dynamics and magnetoelectric properties of the coupled-spin tetrahedral compound Cu2Te2O5Cl2

Helmuth Berger

We report on the spin dynamics and discovery of magnetoelectricity in the coupled-spin tetrahedral compound Cu2Te2O5Cl2. Te-125 NMR measurements show an anomalous resonance frequency shift and a signal wipe-out phenomenon around the Neel temperature T-N = ...

Amer Physical Soc2014

Statistics of Wavelet Coefficients for Sparse Self-Similar Images

Michaël Unser, Julien René Pierre Fageot, Emrah Bostan

We study the statistics of wavelet coefficients of non-Gaussian images, focusing mainly on the behaviour at coarse scales. We assume that an image can be whitened by a fractional Laplacian operator, which is consistent with an

∥ω∥ ^{ -\gamma }

spectral ...

IEEE2014

Realization of higher Wess-Zumino-Witten models in spin chains

Frédéric Mila, Salvatore Manmana, Frédéric Alexis Michaud

Building on the generalization of the exactly dimerized Majumdar-Ghosh ground state to arbitrary spin S for the Heisenberg chain with a three-site term (Si-1 . S-i)(S-i . Si+1) + H.c., we use density-matrix renormalization group simulations and exact diago ...

2013

Conformal Invariance of Ising Model Correlations

Clément Hongler

We review recent results with D. Chelkak and K. Izyurov, where we rigorously prove existence and conformal invariance of scaling limits of magnetization and multi-point spin correlations in the critical Ising model on an arbitrary simply connected planar d ...

Arne Jensen2012

Limit Behaviour of the Voter Model, Exclusion Process and Regenerative Chains

Samuel Schöpfer

Though the following topics seem unlinked, most of the tools used in this thesis are related to random walks and renewal theory. After introducing the voter model, we consider the parabolic Anderson model with the voter model as catalyst. In GÄRTNER, DEN H ...

EPFL2012

Thermal destruction of chiral order in a two-dimensional model of coupled trihedra

Pascal Pierre André Viot

We introduce a minimal model describing the physics of classical two-dimensional (2D) frustrated Heisenberg systems, where spins order in a nonplanar way at T=0. This model, consisting of coupled trihedra (or Ising-RP3 model), encompasses Ising (chiral) de ...

2008

Percolative properties of hard oblate ellipsoids of revolution with a soft shell

Peter Ryser, Claudio Grimaldi, Niklaus Johner, Gianluca Ambrosetti

We present an in-depth analysis of the geometrical percolation behavior in the continuum of random assemblies of hard oblate ellipsoids of revolution. Simulations were carried out by considering a broad range of aspect-ratios, from spheres up to aspect-rat ...

2008

Segregated tunneling-percolation model for transport nonuniversality

Peter Ryser, Claudio Grimaldi, Thomas Maeder

We propose a theory of the origin of transport nonuniversality in disordered insulating-conducting compounds based on the interplay between microstructure and tunneling processes between metallic grains dispersed in the insulating host. We show that if the ...

2003

Piezoresistivity and conductance anisotropy of tunneling-percolating systems

Peter Ryser, Claudio Grimaldi, Thomas Maeder

We propose a theory of the origin of transport nonuniversality in disordered insulating-conducting compounds based on the interplay between microstructure and tunneling processes between metallic grains dispersed in the insulating host. We show that if the ...

2003

Non-gaussianity of the critical 3d Ising model

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Nonlinear Midinfrared Photothermal Spectroscopy Using Zharov Splitting and Quantum Cascade Lasers

Spin dynamics and magnetoelectric properties of the coupled-spin tetrahedral compound Cu2Te2O5Cl2

Statistics of Wavelet Coefficients for Sparse Self-Similar Images

Realization of higher Wess-Zumino-Witten models in spin chains

Conformal Invariance of Ising Model Correlations

Limit Behaviour of the Voter Model, Exclusion Process and Regenerative Chains

Thermal destruction of chiral order in a two-dimensional model of coupled trihedra

Percolative properties of hard oblate ellipsoids of revolution with a soft shell

Segregated tunneling-percolation model for transport nonuniversality

Piezoresistivity and conductance anisotropy of tunneling-percolating systems

Thermal destruction of chiral order in a two-dimensional model of coupled trihedra

Conformal Invariance of Ising Model Correlations

Nonlinear Midinfrared Photothermal Spectroscopy Using Zharov Splitting and Quantum Cascade Lasers

Segregated tunneling-percolation model for transport nonuniversality

Percolative properties of hard oblate ellipsoids of revolution with a soft shell

Piezoresistivity and conductance anisotropy of tunneling-percolating systems

Spin dynamics and magnetoelectric properties of the coupled-spin tetrahedral compound Cu2Te2O5Cl2

Limit Behaviour of the Voter Model, Exclusion Process and Regenerative Chains

Statistics of Wavelet Coefficients for Sparse Self-Similar Images

Realization of higher Wess-Zumino-Witten models in spin chains