Noncommutative spaces with minimal volume uncertainty relations

Andreas Fring (City University London)

Tuesday 30th October, 2012 15:00-16:00 Maths 325

Abstract

We will report on recent results related to noncommutative spaces with commutation relation amongst their canonical variables which imply minimal lengths relations. We demonstrate the relation to q-deformed oscillator algebras and provide an explicit construction for Gazeau-Klauder coherent states related to non-Hermitian Hamiltonians with discrete bounded below and nondegenerate eigenspectrum. The underlying spacetime structure is taken to be of a noncommutative type with associated uncertainty relations implying minimal lengths. The uncertainty relations for the constructed states are shown to be saturated in a Hermitian as well as a non-Hermitian setting for a perturbed harmonic oscillator. The computed value of the Mandel parameter dictates that the coherent wavepackets are assembled according to sub-Poissonian statistics. Fractional revival times, indicating the superposition of classical-like sub-wave packets are clearly identified.

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