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Klaus Sibold
Title: Conjugate variables in QFT and non-commutative coordinates
[pdf]
Abstract: For the case of spin zero we construct conjugate pairs of operators on
Fock space. On states multiplied by polarization vectors coordinate
operators Q conjugate to the momentum operator $P$ exist. The relevant
states have positive definite norm, Lorentz covariance is non-manifestly
realized, the coordinate operators do not commute. In the talk one
example will be presented, for the others we refer to the original papers
http://arxiv.org:1602.08289, http://arxiv.org:1602.08882v2.
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