On the unitarity problem in space/time noncommutative theories
D. Bahns, S. Doplicher, K. Fredenhagen, G. Piacitelli
TL;DR
This paper identifies that the unitarity violation in space/time noncommutative field theories stems from an incorrect formulation of quantum field theory on such spacetimes.
Contribution
It clarifies that proper definition of quantum field theory on noncommutative spacetime resolves the unitarity problem.
Findings
Unitarity violation is due to improper formulation.
Proper definition restores unitarity.
Highlights importance of correct quantum field theory formulation.
Abstract
It is shown that the violation of unitarity observed in space/time noncommutative field theories is due to an improper definition of quantum field theory on noncommutative spacetime.
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