821 citations
- Max Planck SocietyDE4 papers
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7 papers · 2 filters
Cross-correlations in scaling analyses of phase transitions
Martin Weigel, Wolfhard Janke
Thermal or finite-size scaling analyses of importance sampling Monte Carlo time series in the vicinity of phase transition points often combine different estimates for the same qua…
Finite-Temperature Néel Ordering of Fluctuations in a Plaquette Orbital Model
Sandro Wenzel, Wolfhard Janke
We present a pseudospin model which should be experimentally accessible using solid-state devices and, being a variation on the compass model, adds to the toolbox for the protectio…
Universal ratios of critical amplitudes in the Potts model universality class
Bertrand Berche, Paolo Butera, Wolfhard Janke +1
Monte Carlo (MC) simulations and series expansions (SE) data for the energy, specific heat, magnetization, and susceptibility of the three-state and four-state Potts model and Baxt…
Boundary field induced first-order transition in the 2D Ising model: numerical study
Elmar Bittner, Wolfhard Janke
In a recent paper, Clusel and Fortin [J. Phys. A.: Math. Gen. 39 (2006) 995] presented an analytical study of a first-order transition induced by an inhomogeneous boundary magnetic…
Make life simple: unleash the full power of the parallel tempering algorithm
Elmar Bittner, Andreas Nussbaumer, Wolfhard Janke
We introduce a new update scheme to systematically improve the efficiency of parallel tempering simulations. We show that by adapting the number of sweeps between replica exchanges…
Evidence of Unconventional Universality Class in a Two-Dimensional Dimerized Quantum Heisenberg Model
Sandro Wenzel, Leszek Bogacz, Wolfhard Janke
The two-dimensional - dimerized quantum Heisenberg model is studied on the square lattice by means of (stochastic series expansion) quantum Monte Carlo simulations as…