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A continued-fraction representation for the one-dimensional transverse Ising model

1983; IOP Publishing; Volume: 16; Issue: 1 Linguagem: Inglês

10.1088/0022-3719/16/1/009

ISSN

1747-3802

Autores

J. A. Plascak, F. C. Sá Barreto, A.S.T. Pires, L.L. Gonçalves,

Tópico(s)

Quantum many-body systems

Resumo

The dynamics of the one-dimensional transverse Ising mode is studied by means of Mori's continued-fraction representation in the three- and four-pole approximations. The required moments are obtained using the longitudinal time-dependent correlation function calculated in the c-cyclic approximation and various cut-offs of the continued-fraction representation are analysed.

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