112 citations · 220 across the 6 of their papers we have counts for
6 papers
Elementary excitations of the symmetric spin-orbital model: The XY limit
F. Mila, B. Frischmuth, A. Deppeler +1
The elementary excitations of the 1D, symmetric, spin-orbital model are investigated by studying two anisotropic versions of the model, the pure XY and the dimerized XXZ case, with…
Thermodynamics of Random Ferromagnetic Antiferromagnetic Spin-1/2 Chains
Beat Frischmuth, Manfred Sigrist, Beat Ammon +1
Using the quantum Monte Carlo Loop algorithm, we calculate the temperature dependence of the uniform susceptibility, the specific heat, the correlation length, the generalized stag…
Thermodynamics of the one-dimensional SU(4) symmetric spin-orbital model
Beat Frischmuth, Frederic Mila, Matthias Troyer
The ground state properties and the thermodynamics of the one-dimensional SU(4) symmetric spin system with orbital degeneracy are investigated using the quantum Monte Carlo loop al…
Quantum Monte Carlo Loop Algorithm for the t-J Model
Beat Ammon, Hans Gerd Evertz, Naoki Kawashima +2
We propose a generalization of the Quantum Monte Carlo loop algorithm to the t-J model by a mapping to three coupled six-vertex models. The autocorrelation times are reduced by ord…
Low-Temperature Scaling Regime of Random Ferromagnetic-Antiferromagnetic Spin Chains
Beat Frischmuth, Manfred Sigrist
Using the Continuous Time Quantum Monte Carlo Loop algorithm, we calculate the temperature dependence of the uniform susceptibility, and the specific heat of a spin-1/2 chain with…
Low-Energy Properties of Antiferromagnetic Spin-1/2 Heisenberg Ladders with an Odd Number of Legs
Beat Frischmuth, Stephan Haas, German Sierra +1
An effective low-energy description for multi-leg spin-1/2 Heisenberg ladders with an odd number of legs is proposed. Using a newly developed Monte Carlo loop algorithm and exact d…