Goldstone’s theorem for quantum spin systems of finite range
- 1 January 1976
- journal article
- research article
- Published by AIP Publishing in Journal of Mathematical Physics
- Vol. 17 (1) , 109-111
- https://doi.org/10.1063/1.522789
Abstract
Goldstone’s theorem is proved for quantum spin systems of finite range with rotationally invariant Hamiltonian under the assumptions that the ground state of the infinite system is unique, is invariant under a subset of the translation group (which depends on the system), and has long range order.Keywords
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