Uniqueness of the translationally invariant ground state in quantum spin systems
- Cite this article as:
- Matsui, T. Commun.Math. Phys. (1990) 126: 453. doi:10.1007/BF02125695
We introduce a class of quantum spin systems on ℤd. We show that the translationally invariant ground state is unique for this system if it is in a strong external field.
© Springer-Verlag 1990