132 citations · 1.1k across the 48 of their papers we have counts for
32 papers · 1 filter
Rényi Entropy of Zeta-Urns
Piotr Bialas, Zdzislaw Burda, Desmond A. Johnston
We calculate analytically the Renyi entropy for the zeta-urn model with a Gibbs measure definition of the micro-state probabilities. This allows us to obtain the singularities in t…
On Random Allocation Models in the Thermodynamic Limit
Piotr Bialas, Zdzislaw Burda, Desmond A. Johnston
We discuss the phase transition and critical exponents in the random allocation model (urn model) for different statistical ensembles. We provide a unified presentation of the stat…
(Four) Dual Plaquette 3D Ising Models
Desmond A. Johnston, R. P. K. C. M. Ranasinghe
A characteristic feature of the 3d plaquette Ising model is its planar subsystem symmetry. The quantum version of this model has been shown to be related via a duality to the X-Cub…
Lattice SUSY for the DiSSEP at (and )
Desmond A. Johnston
We investigate whether the dynamical lattice supersymmetry discussed for various Hamiltonians, including one-dimensional quantum spin chains, by Fendley et.al. and Hagendorf et.al.…
Plaquette Ising models, degeneracy and scaling
Desmond A. Johnston, Marco Mueller, Wolfhard Janke
We review some recent investigations of the 3d plaquette Ising model. This displays a strong first-order phase transition with unusual scaling properties due to the size-dependent…
Exact solutions to plaquette Ising models with free and periodic boundaries
Marco Mueller, Wolfhard Janke, Desmond A. Johnston
An anisotropic limit of the 3d plaquette Ising model, in which the plaquette couplings in one direction were set to zero, was solved for free boundary conditions by Suzuki (Phys. R…