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Spectral and Propagation Results for Magnetic Schroedinger Operators; a C*-Algebraic Framework | | Marius Mantoiu
; Radu Purice
; Serge Richard
; | | Date: |
2 Mar 2005 | | Subject: | Spectral Theory; Mathematical Physics MSC-class: 35P05, 35S05, 46L55, 46L60, 47A10, 47A60, 47G30, 47L65, 81R15, 81Q10 | math.SP math-ph math.MP | | Abstract: | We study generalised magnetic Schroedinger operators of the form H(A,V)=h(P^A)+V, where h is an elliptic symbol, P^A is the generator of the magnetic translations, with A a vector potential defining a variable magnetic field B, and V is a scalar potential. We are mainly interested in anisotropic functions B and V. The first step is to show that these operators are affiliated to suitable C*-algebras of (magnetic) pseudodifferential operators. A study of the quotient of these C*-algebras by the ideal of compact operators leads to formulae for the essential spectrum of H(A,V), expressed as a union of spectra of some asymptotic operators, supported by the quasi-orbits of a suitable dynamical system. The quotient of the same C*-algebras by other ideals give localization results on the functional calculus of the operators H(A,V), which can be interpreted as non-propagation properties of their unitary groups. | | Source: | arXiv, math.SP/0503046 | | Services: | Forum | Review | PDF | Favorites | |
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