Zobrazeno 1 - 10
of 320
pro vyhledávání: '"Pleimling, M."'
Autor:
Godreche, C., Pleimling, M.
Publikováno v:
J. Stat. Mech. (2015) P07023
We investigate the laws of coarsening of a two-dimensional system of Ising spins evolving under single-spin-flip irreversible dynamics at low temperature from a disordered initial condition. The irreversibility of the dynamics comes from the directed
Externí odkaz:
http://arxiv.org/abs/1505.06587
Publikováno v:
J. Stat. Mech. (2012) P06014
We study the stochastic evolution of four species in cyclic competition in a well mixed environment. In systems composed of a finite number $N$ of particles these simple interaction rules result in a rich variety of extinction scenarios, from single
Externí odkaz:
http://arxiv.org/abs/1205.6394
Publikováno v:
Phys. Rev. E 83, 051108 (2011)
Population dynamics in systems composed of cyclically competing species has been of increasing interest recently. Here, we investigate a system with four or more species. Using mean field theory, we study in detail the trajectories in configuration s
Externí odkaz:
http://arxiv.org/abs/1103.1535
Publikováno v:
J.Phys. A38 (2005) 973-986
For models which exhibit a continuous phase transition in the thermodynamic limit a numerical study of small systems reveals a non-monotonic behaviour of the microcanonical specific heat as a function of the system size. This is in contrast to a trea
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411153
Publikováno v:
J. Phys. A 37 (2004) 8801
In the two-dimensional Ising model weak random surface field is predicted to be a marginally irrelevant perturbation at the critical point. We study this question by extensive Monte Carlo simulations for various strength of disorder. The calculated e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402188
Publikováno v:
Eur. Phys. J. B 27, 321-327 (2002)
The axial next-nearest-neighbour Ising (ANNNI) model of finite thickness is studied. Using mean-field theory, Monte Carlo simulations, and low-temperature analyses, phase diagrams are determined, with a distinct phase diagram for each film thickness.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0203395
Publikováno v:
J. Magn. Magn. Mater. 240, 349-351 (2002)
Properties of magnetic films are studied in the framework of Ising models. In particular, we discuss critical phenomena of ferromagnetic Ising films with straight lines of magnetic adatoms and straight steps on the surface as well as phase diagrams o
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105583
Publikováno v:
J. Phys. A 33, L459 (2000)
The axial next-nearest neighbour Ising (ANNNI) model is studied for thin films of up to $L= 10$ layers, with a distinct phase diagram for each film thickness. The systematics of the ordered phases, as obtained from mean-field theory, Monte Carlo simu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010148
Publikováno v:
Eur. Phys. J. B 18, 655-661 (2000)
The influence of surface defects on the critical properties of magnetic films is studied for Ising models with nearest-neighbour ferromagnetic couplings. The defects include one or two adjacent lines of additional atoms and a step on the surface. For
Externí odkaz:
http://arxiv.org/abs/cond-mat/0007499
Autor:
Pleimling, M., Selke, W.
Publikováno v:
J.Phys. A33 (2000) L199
The two-dimensional Ising model with fixed magnetization is studied using Monte Carlo techniques. At the coexistence line, the macroscopic, extensive droplet of minority spins becomes thermally unstable by breaking up into microscopic clusters. Intri
Externí odkaz:
http://arxiv.org/abs/cond-mat/0001178