130 citations · 159 across the 3 of their papers we have counts for
3 papers
cond-mat.str-el2009★ 9 cited
Microscopic Model versus Systematic Low-Energy Effective Field Theory for a Doped Quantum Ferromagnet
U. Gerber, C. P. Hofmann, F. Kampfer +1
We consider a microscopic model for a doped quantum ferromagnet as a test case for the systematic low-energy effective field theory for magnons and holes, which is constructed in c…
cond-mat.str-el2007★ 130 cited
From an Antiferromagnet to a Valence Bond Solid: Evidence for a First Order Phase Transition
F. -J. Jiang, M. Nyfeler, S. Chandrasekharan +1
Using a loop-cluster algorithm we investigate the spin 1/2 Heisenberg antiferromagnet on a square lattice with exchange coupling and an additional four-spin interaction of stre…
cond-mat.str-el2002★ 20 cited
Meron-Cluster Approach to Systems of Strongly Correlated Electrons
S. Chandrasekharan, J. Cox, J. C. Osborn +1
Numerical simulations of strongly correlated electron systems suffer from the notorious fermion sign problem which has prevented progress in understanding if systems like the Hubba…