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Pseudoparticle Description of the 1D Hubbard Model Electronic Transport Properties
N. M. R. Peres, J. M. P. Carmelo, D. K. Campbell +1
We extend the pseudoparticle transport description of the Hubbard chain to all energy scales. In particular we compute the mean value of the electric current transported by any Bet…
Quantum-critical scaling and temperature-dependent logarithmic corrections in the spin-half Heisenberg chain
O. A. Starykh, R. R. P. Singh, A. W. Sandvik
Low temperature dynamics of the S=1/2 Heisenberg chain is studied via a simple ansatz generalizing the conformal mapping and analytic continuation procedures to correlation functio…
Phase separation and the existence of superconductivity in a one-dimensional copper-oxygen model
A. W. Sandvik, A. Sudbo
The phase separation instability occurring with increasing nearest-neighbor repulsion V in a two-band Hubbard model (CuO chain) is discussed. Quantum Monte Carlo simulations indica…