Communications in Mathematical Physics

, Volume 357, Issue 1, pp 231–248 | Cite as

Asymptotic Observables in Gapped Quantum Spin Systems



This paper gives a construction of certain asymptotic observables (Araki–Haag detectors) in ground state representations of gapped quantum spin systems. The construction is based on general assumptions which are satisfied e.g. in the Ising model in strong transverse magnetic fields. We do not use the method of propagation estimates, but exploit instead the existence of the wave operators combined with the compactness of the relevant propagation observables at any fixed time. Implications for the problem of asymptotic completeness are briefly discussed.


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© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Zentrum MathematikTechnische Universität MünchenGarchingGermany

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