期刊
JOURNAL OF STATISTICAL PHYSICS
卷 108, 期 3-4, 页码 373-399出版社
KLUWER ACADEMIC/PLENUM PUBL
DOI: 10.1023/A:1015713005441
关键词
quantum spins; quasiparticles; expansions; transverse Ising model
Convergent expansions of the wavefunctions for the ground state and lowlying excited states of quantum transverse Ising systems are obtained. These expansions are employed to prove that the dispersion relation for a single quasi-particle has a convergent expansion.
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