177 citations · 669 across the 29 of their papers we have counts for
4 papers · 1 filter
Mean Field study of the heavy fermion metamagnetic transition
S. Viola Kusminskiy, K. S. D. Beach, A. H. Castro Neto +1
We investigate the evolution of the heavy fermion ground state under application of a strong external magnetic field. We present a richer version of the usual hybridization mean fi…
Valence bond description of the long-range, nonfrustrated Heisenberg chain
K. S. D. Beach
The Heisenberg chain with antiferromagnetic, powerlaw exchange has a quantum phase transition separating spin liquid and Neel ordered phases at a critical value of the powerlaw exp…
Fractal valence bond loops in a long-range Heisenberg model at criticality
K. S. D. Beach
We present a valence bond theory of the spin-S quantum Heisenberg model. For nonfrustracting, local exchange and dimension d > 1, it predicts a resonating ground state with bond am…
Monte Carlo Simulations of Quantum Spin Systems in the Valence Bond Basis
A. W. Sandvik, K. S. D. Beach
We discuss a projector Monte Carlo method for quantum spin models formulated in the valence bond basis, using the S=1/2 Heisenberg antiferromagnet as an example. Its singlet ground…