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This article is cited in 6 scientific papers (total in 6 papers)
Cluster perturbation theory for spin Hamiltonians
A. S. Ovchinnikov, I. G. Bostrem, Vl. E. Sinitsyn Ural State University, Ekaterinburg, Russia
Abstract:
We extend cluster perturbation theory to quantum spin systems. As an application, we calculate the spectral function and the density of states of one-particle excitations of a chain of spin 1/2 particles with alternating exchange interaction.
Keywords:
cluster perturbation theory, singlet magnetics, spin chain.
Received: 04.08.2009
Citation:
A. S. Ovchinnikov, I. G. Bostrem, Vl. E. Sinitsyn, “Cluster perturbation theory for spin Hamiltonians”, TMF, 162:2 (2010), 216–226; Theoret. and Math. Phys., 162:2 (2010), 179–187
Linking options:
https://www.mathnet.ru/eng/tmf6465https://doi.org/10.4213/tmf6465 https://www.mathnet.ru/eng/tmf/v162/i2/p216
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Abstract page: | 703 | Full-text PDF : | 257 | References: | 82 | First page: | 30 |
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