Expansions for one quasiparticle states in spin 1/2 systems
classification
❄️ cond-mat.stat-mech
math-phmath.MP
keywords
expansionsconvergentstatessystemsdispersionemployedexcitedexpansion
read the original abstract
Convergent expansions of the wavefunctions for the ground state and low-lying 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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