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A \(q\)-deformed Lorentz algebra. (English) Zbl 0793.17005

Summary: We derive a \(q\)-deformed version of the Lorentz algebra by deforming the algebra \(\text{SL}(2,\mathbb{C})\). The method is based on linear representations of the algebra on the complex quantum spinor space. We find that the generators usually identified with \(\text{SL}_ q(2,\mathbb{C})\) generate \(\text{SU}_ q(2)\) only. Four additional generators are added which generate Lorentz boosts. The full algebra of all seven generators and their coproduct is presented. We show that in the limit \(q\to 1\) the generators are those of the classical Lorentz algebra plus an additional U(1). Thus we have a deformation of \(\text{SL}(2,\mathbb{C})\times \text{U}(1)\).

MSC:

17B37 Quantum groups (quantized enveloping algebras) and related deformations
81R50 Quantum groups and related algebraic methods applied to problems in quantum theory
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References:

[1] P. Podleś, SL. Woronowicz: Mittag-Leffler Institute Report No. 20, 1988/1989
[2] U. Carow-Watamura, M. Schlieker, M. Scholl, S. Watamura: Z. Phys. C – Particles and Fields 48 (1990) 159–165; preprint KA-THEP-1990-14, to be published in Int. Mod. Phys. A · doi:10.1007/BF01565619
[3] W.B. Schmidke, J Wess, B. Zumino: forthcoming paper
[4] J Wess, B. Zumino: Nucl. Phys. B (Proc. Suppl.) 18B (1990) 302
[5] J. Wess: Talk given at Third Centenary Celebrations of the Mathematische Gesellschaft, March 1990, based on work with B. Zumino. Preprint KA-THEP-1990-22 (1990)
[6] Yu.I. Manin: Preprint Montreal University CRM-1561 (1988); Comm. Math. Phys. 123 (1989) 163
[7] This formalism was first presented by B. Zumino in a talk given at: Recent Advances in Field Theories. Annecy meeting in honor of R. Stora, March 1990
[8] S.L. Woronowicz: Publ. RIMS-Kyoto 23 (1987) 117–181; Group Structure on Non-Commutative Spaces. Fields and Geometry 1986, Proceedings of the XXIInd Winter School and Workshop of Theoretical Physics, Karpacz, Poland, pp. 478–496. Singapore: World Scientific 19; Commun. Math. Phys. 111 (1987) 613–665 · Zbl 0676.46050 · doi:10.2977/prims/1195176848
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