ar X iv : m at h - ph / 0 20 90 10 v 1 5 S ep 2 00 2 DECOHERENCE AND INFRARED DIVERGENCE 1 Joachim Kupsch

نویسنده

  • Joachim Kupsch
چکیده

The dynamics of a particle which is linearly coupled to the environment of a Boson field is investigated. For velocity coupling and for local (position) coupling the reduced dynamics of the particle induces superselection rules for the momentum, if the Boson field is infrared divergent. Thereby the Hamiltonian of the total system remains bounded from below.

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تاریخ انتشار 2002