Quantum ising model with staggered interaction |
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| Authors: | F Iglói J Zittartz |
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| Institution: | (1) Institut für Theoretische Physik, Universität zu Köln, Zülpicher Strasse 77, D-5000 Köln 41, Federal Republic of Germany;(2) Present address: Central Research Institute for Physics, H-1525, Budapest, Hungary |
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| Abstract: | The spectrum of a quantum Ising model with staggered interaction is solved exactly for periodic, antiperiodic and free boundary conditions. The properties of the ground state and the excitation spectrum are investigated at the phase transition points, and the conformal theory and the finite size scaling hypothesis are tested along the critical line. The conformally invariant Hamiltonian is found to be independent of the staggering field in the finite size scaling limit.Work performed within the research program of the Sonderforschungsbereich 125 |
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