Noncommutativity from spectral flow

Abstract

We investigate the transition from second to first order systems. This transforms configuration space into phase space and hence introduces noncommutativity in the former. Quantum mechanically, the transition may be described in terms of spectral flow. Gaps in the energy or mass spectrum may become large which effectively truncates the available state space. Using both operator and path integral languages we explicitly discuss examples in quantum mechanics, (light-front) quantum field theory and string theory.

31 pages, one Postscript figure

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Cited by in corpus (7)

• Nonperturbative pair production in interpolating fields
• Classical and quantum particle dynamics in univariate background fields
• Noncommutative Geometries and Gravity
• Color Glass Condensate in Schwinger-Keldysh QCD
• Probing the ground state in gauge theories
• High-intensity scaling in UV-modified QED
• Noncommutativity and the lightfront