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Paper detail

Noncommutative Dipole Field Theories And Unitarity

We extend the argument of Gomis and Mehen for violation of unitarity in field theories with space-time noncommutativity to dipole field theories. In dipole field theories with a timelike dipole vector, we present 1-loop amplitudes that violate the optical theorem. A quantum mechanical system with nonlocal potential of finite extent in time also shows violation of unitarity.

preprint2004arXivOpen access
Dah-Wei ChiouOri J. Ganor
hep-th
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Dah-Wei ChiouOri J. Ganor

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