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4 papers · 2 filters
Phase structure of an Abelian two-Higgs model and high temperature superconductors
M. N. Chernodub, E. -M. Ilgenfritz, A. Schiller
We study the phase structure of a three dimensional Abelian Higgs model with singly- and doubly-charged scalar fields coupled to a compact Abelian gauge field. The model is pretend…
Green's function theory of quasi-two-dimensional spin-half Heisenberg ferromagnets: stacked square versus stacked kagomé lattice
D. Schmalfuß, J. Richter, D. Ihle
We consider the thermodynamic properties of the quasi-two-dimensional spin-half Heisenberg ferromagnet on the stacked square and the stacked kagomé lattices by using the spin-rotat…
Thermodynamics of S>=1 ferromagnetic Heisenberg chains with uniaxial single-ion anisotropy
I. Juhász Junger, D. Ihle, J. Richter
The thermodynamic properties of S>=1 ferromagnetic chains with an easy-axis single-ion anisotropy are investigated at arbitrary temperatures by both a Green-function approach, base…
Kertesz Line in the Three-Dimensional Compact U(1) Lattice Higgs Model
Sandro Wenzel, Elmar Bittner, Wolfhard Janke +2
The three-dimensional lattice Higgs model with compact U(1) gauge symmetry and unit charge is investigated by means of Monte Carlo simulations. The full model with fluctuating Higg…