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cond-mat.str-el2004
Low Energy Singlets in the Heisenberg Kagome Antiferromagnet
Ran Budnik, Assa Auerbach
The spin half Heisenberg antiferromagnet on the Kagome lattice, is mapped by Contractor Renormalization to a Spin-Pseudospin Hamiltonian on the triangular superlattice. Variational…
cond-mat.str-el1998
Quantum Magnetism Approaches to Strongly Correlated Electrons
A. Auerbach
Problems of strongly interacting electrons can be greatly simplified by reducing them to effective quantum spin models. The initial step is renormalization of the Hamiltonian into…