2 papers
quant-ph1999
Exact Classical Effective Potential
J H Samson
A quantum spin system can be modelled by an equivalent classical system, with an effective Hamiltonian obtained by integrating all non-zero frequency modes out of the path integral…
cond-mat1996
Phase separation in the one-dimensional Hubbard model
J. H. Samson
The Hartree-Fock ground-state phase diagram of the one-dimensional Hubbard model is calculated in the plane, restricted to phases with no charge density modulation, extending…