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Exact results for a Z(3)-clock-type model and some close relatives
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 22018 (English)In: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, no 24, article id 245104Article in journal (Refereed) Published
Abstract [en]

In this paper, we generalized the Peschel-Emery line of the interacting transverse field Ising model to a model based on three-state clock variables. Along this line, the model has exactly degenerate ground states, which can be written as product states. In addition, we present operators that transform these ground states into each other. Such operators are also presented for the Peschel-Emery case. We numerically show that the generalized model is gapped. Furthermore, we study the spin-S generalization of interacting Ising model and show that along a Peschel-Emery line they also have degenerate ground states. We discuss some examples of excited states that can be obtained exactly for all these models.

Place, publisher, year, edition, pages
2018. Vol. 98, no 24, article id 245104
National Category
Materials Engineering Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-163557DOI: 10.1103/PhysRevB.98.245104ISI: 000452003600011OAI: oai:DiVA.org:su-163557DiVA, id: diva2:1279235
Available from: 2019-01-16 Created: 2019-01-16 Last updated: 2019-01-16Bibliographically approved

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