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10 papers · 1 filter
Critical Binder cumulant in two-dimensional anisotropic Ising models
W. Selke, L. N. Shchur
The Binder cumulant at the phase transition of Ising models on square lattices with various ferromagnetic nearest and next-nearest neighbour couplings is determined using mainly Mo…
Kneser-Hecke-operators in coding theory
Gabriele Nebe
The Kneser-Hecke-operator is a linear operator defined on the complex vector space spanned by the equivalence classes of a family of self-dual codes of fixed length. It maps a line…
Renormalization-group analysis of the one-dimensional extended Hubbard model with a single impurity
S. Andergassen, T. Enss, V. Meden +3
We analyze the one-dimensional extended Hubbard model with a single static impurity by using a computational technique based on the functional renormalization group. This extends p…
d-wave resonating valence bond states of fermionic atoms in optical lattices
Simon Trebst, Ulrich Schollwoeck, Matthias Troyer +1
We study controlled generation and measurement of superfluid d-wave resonating valence bond (RVB) states of fermionic atoms in 2D optical lattices. Starting from loading spatial an…
Magnon Heat Conductivity and Mean Free Paths in Two-Leg Spin Ladders: A Model-Independent Determination
C. Hess, P. Ribeiro, B. Büchner +4
The magnon thermal conductivity of the spin ladders in has been investigated at low doping levels , 0.125, 0.25, 0.5 and 0.…
Reaction Kinetics in a Tight Spot
Ofer Biham, Joachim Krug, Azi Lipshtat +1
The standard analysis of reaction networks based on deterministic rate equations fails in confined geometries, commonly encountered in fields such as astrochemistry, thin film grow…