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Long time dynamics of the transverse Ising model - comparison with data on LiTbF4
, Joao Florencio Jr, Zhi-Xiong Cai
Published in Publ by Materials Research Society, Pittsburgh, PA, United States
1993
Volume: 291
   
Pages: 337 - 342
Abstract
We use the continued fraction formalism (CFF) to obtain the zz-component of the dynamical spin pair correlations of a transverse Ising model (TIM) in 2 D at T = ∞ for the first time. Our calculations suggest that the correlation function decays algebraically at long times as t-α, 1.5<α<2.2, which is slower than gaussian decay found for the corresponding dynamical correlation in 1 D. The calculations suggest that the corresponding dynamical correlation in 3 D is also likely to exhibit a power law decay. Our results compare favorably with the neutron scattering data on LiTbF4, for T>Tc, an induced moment ferromagnet.
About the journal
JournalMaterials Research Society Symposium Proceedings
PublisherPubl by Materials Research Society, Pittsburgh, PA, United States
ISSN02729172