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6 papers · 2 filters
"Haldane" phases with ultracold fermionic atoms in double-well optical lattices
P. Fromholz, S. Capponi, P. Lecheminant +2
We propose to realize one-dimensional topological phases protected by SU() symmetry using alkali or alkaline-earth atoms loaded into a bichromatic optical lattice. We derive a r…
Non-perturbative methodologies for low-dimensional strongly-correlated systems: From non-abelian bosonization to truncated spectrum methods
Andrew J. A. James, Robert M. Konik, Philippe Lecheminant +2
We review two important non-perturbative approaches for extracting the physics of low-dimensional strongly correlated quantum systems. Firstly, we start by providing a comprehensiv…
A Monte Carlo study of critical properties of strongly diluted magnetic semiconductor (Ga,Mn)As
P. Tomczak, H. T. Diep, P. Jabłoński +1
Within a Monte Carlo technique we examine critical properties of diluted bulk magnetic semiconductor (Ga,Mn)As modeled by a strongly diluted ferromagnetic Heisenberg spin-$\frac{5}…
Bubble phase at for a spinless hollow-core interaction
Grégoire Misguich, Thierry Jolicoeur, Takahiro Mizusaki
We investigate fractional quantum Hall states for model interactions restricted to a repulsive hard-core. When the hard-core excludes relative angular momentum between spinle…
Finite-Temperature Dynamics and Thermal Intraband Magnon Scattering in Haldane Spin-One Chains
Jonas Becker, Thomas Köhler, Alexander C. Tiegel +3
The antiferromagnetic spin-one chain is considerably one of the most fundamental quantum many-body systems, with symmetry protected topological order in the ground state. Here, we…
Breakdown of Magnons in a Strongly Spin-Orbital Coupled Magnet
Stephen M. Winter, Kira Riedl, Pavel A. Maksimov +3
The description of quantized collective excitations stands as a landmark in the quantum theory of condensed matter. A prominent example occurs in conventional magnets, which suppor…