The Quantum Metric Structure of Quantum $\mathrm{SU}(2)$ von Jens Kaad | ISBN 9783985470914

The Quantum Metric Structure of Quantum $\mathrm{SU}(2)$

von Jens Kaad und David Kyed
Mitwirkende
Autor / AutorinJens Kaad
Autor / AutorinDavid Kyed
Buchcover The Quantum Metric Structure of Quantum $\mathrm{SU}(2)$ | Jens Kaad | EAN 9783985470914 | ISBN 3-98547-091-X | ISBN 978-3-98547-091-4

The Quantum Metric Structure of Quantum $\mathrm{SU}(2)$

von Jens Kaad und David Kyed
Mitwirkende
Autor / AutorinJens Kaad
Autor / AutorinDavid Kyed

We introduce a two parameter family of Dirac operators on quantum \mathrm{SU(2)} and analyse their properties from the point of view of non-commutative metric geometry. It is shown that these Dirac operators give rise to compact quantum metric structures, and that the corresponding two parameter family of compact quantum metric spaces varies continuously in Rieffel's quantum Gromov–Hausdorff distance. This continuity result includes the classical case where we recover the round 3-sphere up to a global scaling factor on the metric. Our main technical tool is a quantum \mathrm{SU(2)} analogue of the Berezin transform, together with its associated fuzzy approximations, the analysis of which also leads to a systematic way of approximating Lipschitz operators by means of polynomial expressions in the generators.