137 citations · 329 across the 7 of their papers we have counts for
8 papers
Correlation-function asymptotic expansions: pre-factors universality
J. M. P. Carmelo, K. Penc
We show that the pre-factors of all terms of the one-dimensional Hubbard model correlation-function asymptotic expansions have an universal form, as the corresponding critical expo…
Monte Carlo study of half-magnetization plateau and magnetic phase diagram in pyrochlore antiferromagnetic Heisenberg model
Yukitoshi Motome, Karlo Penc, Nic Shannon
The antiferromagnetic Heisenberg model on a pyrochlore lattice under external magnetic field is studied by classical Monte Carlo simulation. The model includes bilinear and biquadr…
Cyclic exchange, isolated states and spinon deconfinement in an XXZ Heisenberg model on the checkerboard lattice
Nic Shannon, Gregoire Misguich, Karlo Penc
The antiferromagnetic Ising model on a checkerboard lattice has an ice-like ground state manifold with extensive degeneracy. and, to leading order in J_xy, deconfined spinon excita…
Finite temperature properties and frustrated ferromagnetism in a square lattice Heisenberg model
Nic Shannon, Burkhard Schmidt, Karlo Penc +1
The spin 1/2 Heisenberg model on a square lattice with antiferromagnetic nearest- and next-nearest neighbour interactions (the -- model) has long been studied as a paradi…
General spectral function expressions of a 1D correlated model
J. M. P. Carmelo, K. Penc
We introduce a method that allows the evaluation of general expressions for the spectral functions of the one-dimensional Hubbard model for all values of the on-site electronic rep…
Finite-Energy Pseudoparticle Theory for the 1D Hubbard Model II: Holon and Spinon Dominant Processes for the Few-Electron Spectral Weight Properties
J. M. P. Carmelo, K. Penc
In the first paper of this series it was found that the -spin 1/2 holons, spin 1/2 spinons, and pseudoparticles whose occupancy configurations describe the energy eigenstate…