Retarded Functions in Noncommutative Theories

Details Retarded Functions in Noncommutative Theories Retarded Functions in Noncommutative Theories

2004-12-28

arxiv.org/abs/hep-th/0412313v2

Phys.Lett. B612 (2005) 275-282

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, minor corrections and additions, journal reference added

Scientific paper

10.1016/j.physletb.2005.02.052

The perturbative approach to quantum field theory using retarded functions is
extended to noncommutative theories. Unitarity as well as quantized equations
of motion are studied and seen to cause problems in the case of space-time
noncommutativity. A modified theory is suggested that is unitary and preserves
the classical equations of motion on the quantum level.

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