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j is the underlying irreducible subspace. The ordinary Bose operators are contained in this algebra and correspond to the unphysical case j = 0, as was shown in the paper by Jordan et al., The intimate connection between the isolated E ⊗ e JT case and the para-Bose operators was uncovered by M. Schmutz (Physica 101 A, 1 (1980)). In our work, no use has been made of these concepts
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j is the underlying irreducible subspace. The ordinary Bose operators are contained in this algebra and correspond to the unphysical case j = 0, as was shown in the paper by Jordan et al., The intimate connection between the isolated E ⊗ e JT case and the para-Bose operators was uncovered by M. Schmutz (Physica 101 A, 1 (1980)). In our work, no use has been made of these concepts.
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k(q) as in reference [25]. The complicated structure of the hopping term would, however, require a considerable amount of computational work. A very accurate and novel variational treatment of polaronic systems has recently been proposed by Herfort and Wagner (J. Phys. Cond. Matt. 13, 3297 (2001)).
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