Quantum Deformations of Space-Time Symmetries and Interactions

Details Quantum Deformations of Space-Time Symmetries and Interactions Quantum Deformations of Space-Time Symmetries and Interactions

1996-06-26

arxiv.org/abs/hep-th/9606170v1

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 10 pages

Scientific paper

10.1023/A:1021444011964

We discuss quantum deformations of Lie algebra as described by the noncoassociative modification of its coalgebra structure. We consider for simplicity the quantum $D=1$ Galilei algebra with four generators: energy $H$, boost $B$, momentum $P$ and central generator $M$ (mass generator). We describe the nonprimitive coproducts for $H$ and $B$ and show that their noncocommutative and noncoassociative structure is determined by the two-body interaction terms. Further we consider the case of physical Galilei symmetry in three dimensions. Finally we discuss the noninteraction theorem for manifestly covariant two-body systems in the framework of quantum deformations of $D=4$ \poin algebra and a possible way out.

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