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5 papers · 2 filters
Dynamics of an ion chain in a harmonic potential
Giovanna Morigi, Shmuel Fishman
Cold ions in anisotropic harmonic potentials can form ion chains of various sizes. Here, the density of ions is not uniform, thus the eigenmodes are not phononic-like waves. We stu…
Power-law tail distributions and nonergodicity
Eric Lutz
We establish an explicit correspondence between ergodicity breaking in a system described by power-law tail distributions and the divergence of the moments of these distributions.
Spin facilitated Ising model with long range interaction
Beatrix M. Schulz, Steffen Trimper, Michael Schulz
We study the dynamics of a spin facilitated Ising model with long range kinetic constraints. To formulate those restrictions within an analytical approach we introduce the size of…
Memory-Controlled Diffusion
Steffen Trimper, Knud Zabrocki, Michael Schulz
Memory effects require for their incorporation into random-walk models an extension of the conventional equations. The linear Fokker-Planck equation for the probability density $p(…
Eigenmodes and thermodynamics of a Coulomb chain in a harmonic potential
Giovanna Morigi, Shmuel Fishman
The density of ions trapped in a harmonic potential in one dimension is not uniform. Consequently the eigenmodes are not phonons. We calculate the long wavelength modes in the cont…