Abstract
Efficient cluster expansion techniques have been developed for quantum Hamiltonian lattice models. Applications to antiferromagnetic Heisenberg systems, based on expansion about the Ising limit, yield accurate results for both ground state properties and excitation spectra. Recent work on novel systems, including spin ladders and frustrated two-dimensional systems, will be described.
This work forms part of a research project supported by a grant from the Australian Research Council.
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© 1997 Springer-Verlag
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Oitmaa, J., Zheng, W., Hamer, C.J. (1997). Studies of lattice spin systems using series expansions. In: Clark, J.W., Ristig, M.L. (eds) Theory of Spin Lattices and Lattice Gauge Models. Lecture Notes in Physics, vol 494. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0104300
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DOI: https://doi.org/10.1007/BFb0104300
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