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Lorentz invariance, unitarity and UV-finiteness of QFT on noncommutative spacetime

Anais Smailagic1 and Euro Spallucci2

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Ultraviolet finite quantum field theory on even-dimensional noncommutative spacetime is formulated using coordinate coherent states. 2D spacetime is foliated into families of orthogonal, noncommutative, two planes. Lorentz invariance is recovered if one imposes a single noncommutative parameter θ in the theory. Unitarity is checked at the one-loop level and no violation is found. Being UV finite NCQFT does not present any UV/IR mixing.


PACS

02.40.Gh Noncommutative geometry

11.10.Nx Noncommutative field theory

11.30.Er Charge conjugation, parity, time reversal, and other discrete symmetries

MSC

58J70 Invariance and symmetry properties (See also 35A30)

65R20 Integral equations

81T75 Noncommutative geometry methods (See also 46L85, 46L87, 58B34)

Subjects

Mathematical physics

Particle physics and field theory

Dates

Issue 28 (16 July 2004)

Received 26 March 2004, in final form 24 May 2004

Published 30 June 2004



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