Spectrum and correlation functions of a quasi-one-dimensional quantum Ising model

Details Spectrum and correlation functions of a quasi-one-dimensional quantum Ising model Spectrum and correlation functions of a quasi-one-dimensional quantum Ising model

2002-12-11

arxiv.org/abs/cond-mat/0212248v2

Phys Rev Lett 90 177206 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.90.177206

We consider a model of weakly coupled quantum Ising chains. We describe the phase diagram of such a model and study the dynamical magnetic susceptibility by means of Bethe ansatz and the Random Phase Approximation applied to the inter-chain exchange. We argue that some of the beautiful physics of the quantum Ising chain in a magnetic field survives in the ordered state of the quasi-one-dimensional model and can be observed experimentally by means of neutron scattering.

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