String-Localized Quantum Fields and Modular Localization |
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Authors: | Jens Mund Bert Schroer Jakob Yngvason |
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Institution: | 1. Departamento de Física, ICE, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil 2. CBPF, Rua Dr. Xavier Sigaud 150, 22290-180, Rio de Janeiro, Brazil 3. Institut für Theoretische Physik, FU-Berlin, Arnimallee 14, 14195, Berlin, Germany 4. Erwin Schr?dinger Institute for Mathematical Physics, Boltzmanngasse 9, 1090, Vienna, Austria 5. Institut für Theoretische Physik, Universit?t Wien, Boltzmanngasse 5, 1090, Vienna, Austria
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Abstract: | We study free, covariant, quantum (Bose) fields that are associated with irreducible representations of the Poincaré group and localized in semi-infinite strings extending to spacelike infinity. Among these are fields that generate the irreducible representations of mass zero and infinite spin that are known to be incompatible with point-like localized fields. For the massive representations and the massless representations of finite helicity, all string-localized free fields can be written as an integral, along the string, of point-localized tensor or spinor fields. As a special case we discuss the string-localized vector fields associated with the point-like electromagnetic field and their relation to the axial gauge condition in the usual setting.Dedicated to Hans-Jürgen Borchers on the occasion of his 80th birthday |
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