Uniqueness of the translationally invariant ground state in quantum spin systems |
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| Authors: | T. Matsui |
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| Affiliation: | (1) Department of Mathematics and Computer Science, University College of Swansea, Singleton Park, SA2 8PP Swansea, Wales, UK |
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| Abstract: | We introduce a class of quantum spin systems on  d. We show that the translationally invariant ground state is unique for this system if it is in a strong external field.Supported by the Science and Engineering Research Council |
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