Exact mean-field solution of a spin chain with short-range and long-range interactions
We consider the transverse field Ising model with additional all-to-all interactions between the spins. We show that a mean-field treatment of this model becomes exact in the thermodynamic limit, despite the presence of 1D short-range interactions. Namely, we show that the eigenstates of the model a...
Main Author: | Etienne Granet |
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Format: | Article |
Language: | English |
Published: |
SciPost
2023-05-01
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Series: | SciPost Physics |
Online Access: | https://scipost.org/SciPostPhys.14.5.133 |
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