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- W1792415946 abstract "In a minimalistic view, the use of noncommutative coordinates can be seen just as a way to better express non-local interactions of a special kind: 1-particle solutions (wavefunctions) of the equation of motion in the presence of an external field may look simpler as functions of noncommutative coordinates. It turns out that also the wave-mechanical description of a system of n such bosons/fermions and its second quantization is simplified if we translate them in terms of their deformed counterparts. The latter are obtained by a general twist-induced ⋆-deformation procedure which deforms in a coordinated way not just the spacetime algebra, but the larger algebra generated by any number n of copies of the spacetime coordinates and by the particle creation and annihilation operators. On the deformed algebra the action of the original spacetime transformations looks twisted. In a non-conservative view, we thus obtain a twisted covariant framework for QFT on the corresponding noncommutative spacetime consistent with quantum mechanical axioms and Bose-Fermi statistics. One distinguishing feature is that the field commutation relations remain of the type “field (anti)commutator=a distribution”. We illustrate the results by choosing as examples interacting non-relativistic and free relativistic QFT on Moyal space(time)s." @default.
- W1792415946 created "2016-06-24" @default.
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- W1792415946 date "2010-07-07" @default.
- W1792415946 modified "2023-10-18" @default.
- W1792415946 title "Noncommutative spaces with twisted symmetries and second quantization" @default.
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