On general properties of Lorentz invariant formulation of noncommutative quantum field theory

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dc.creatorSaxell, Sami
dc.date2008-04-21
dc.date2008-08-19
dc.date.accessioned2026-07-07T11:50:03Z
dc.date.available2026-07-07T11:50:03Z
dc.descriptionWe study general properties of certain Lorentz invariant noncommutative quantum field theories proposed in the literature. We show that causality in those theories does not hold, in contrast to the canonical noncommutative field theory with the light-wedge causality condition. This is the consequence of the infinite nonlocality of the theory getting spread in all spacetime directions. We also show that the time-ordered perturbation theory arising from the Hamiltonian formulation of noncommutative quantum field theories remains inequivalent to the covariant perturbation theory with usual Feynman rules even after restoration of Lorentz symmetry.
dc.description13 pages, references added
dc.identifierhttps://arxiv.org/abs/0804.3341
dc.identifierhttp://arxiv.org/abs/0804.3341
dc.identifierPhys.Lett.B666:486-490,2008
dc.identifierdoi:10.1016/j.physletb.2008.07.096
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203444
dc.subjectHigh Energy Physics - Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOn general properties of Lorentz invariant formulation of noncommutative quantum field theory
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