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4 papers · 1 filter
Surface Magnetization and Critical Behavior of Aperiodic Ising Quantum Chains
L. Turban, F. Igloi, B. Berche
We consider semi-infinite two-dimensional layered Ising models in the extreme anisotropic limit with an aperiodic modulation of the couplings. Using substitution rules to generate…
Inhomogeneous Systems with Unusual Critical Behaviour
F. Iglói, I. Peschel, L. Turban
The phase transitions and critical properties of two types of inhomogeneous systems are reviewed. In one case, the local critical behaviour results from the particular shape of the…
Phason modes in spin-density wave in the presence of long-range Coulomb interaction
Attila Virosztek, Kazumi Maki
We study the effect of long-range Coulomb interaction on the phason in spin-density wave (SDW) within mean field theory. In the longitudinal limit and in the absence of SDW pinning…
Transition from Poissonian to GOE level statistics in a modified Artin's billiard
A. Csordás, R. Graham, P. Szépfalusy +1
One wall of Artin's billiard on the Poincaré half plane is replaced by a one-parameter () family of nongeodetic walls. A brief description of the classical phase space of this…