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Coloured supersymmetry

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

We construct a supersymmetry algebra which satisfies the triality rules governing the multiplication of « coloured » quark variables. Quarks and leptons are treated on an equal footing. The affine structure imposed on the unified space of Fermionic and Minkowski co-ordinates forces the introduction of separate leptonic and hadronic (quark) variables. Some basic properties of dynamical superstructures based on the coloured superspace are discussed. It is pointed out, in particular, that supersymmetric theories based on coloured superspace allow for an interpretation of superfield components in terms of lepton and quark fields; the theory permits separate conservation of lepton and baryon numbers.

Riassunto

Si construisce un’algebra di supersimmetria che soddisfa le regole di trialità cui obbedisce la moltiplicazione di variabili di quark « colorati ». Quark e leptoni sono trattati sullo stesso piano. La struttura affine imposta sullo spazio unificato di coordinate fermioniche e di Minkowski forza l’introduzione di variabili leptoniche ed adroniche (quark) separate. Si discutono alcune proprietà basilari delle superstrutture dinamiche basate sul superspazio colorato. In particolare si puntualizza che le teorie supersimmetriche basate sul superspazio colorato permettono per un’interpretazione delle componenti del supercampo in termini di campi leptonici e di quark; la teoria ammette la conservazione separata dei numeri leptonici e barionici.

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Literatur

  1. See, however, the discussion of this question in ref. (4,7).

  2. M. Günaydin andF. Gürsey:Lett. Nuovo Cimento,6, 401 (1973);Phys. Rev. D,9, 3387 (1974).

    Article  Google Scholar 

  3. M. Günaydin andF. Gürsey:Journ. Math. Phys.,14, 1651 (1973).

    Article  MATH  Google Scholar 

  4. F. Gürsey:Proceedings of the JHU Workshop on Current Problems in High-Energy Particle Theory, edited byG. Domokos andS. Kövesi Domokos (Baltimore, Md., 1974).

  5. H. Freudenthal:Adv. Math.,1, 145 (1964).

    Article  MATH  MathSciNet  Google Scholar 

  6. F. Gürsey:Proceedings of the Kyoto Conference (1975).

  7. A preliminary investigation of this type has been carried out by the present authors, cf.R. Casalbuoni, G. Domokos andS. Kövesi-Domokos:Nuovo Cimento,31 A, 423 (1976). This paper is based on the assumption that colour and space-time algebras can be realized in a direct product form.

    Article  ADS  Google Scholar 

  8. J. Wess andB. Zumino:Nucl. Phys.,70 B, 39 (1974). There exist excellent reviews on the subject; cf., for instance,L. O’Raifertaigh:Comm. Dublin Inst. Adv. Studies, Ser. A, No. 22 (1975).B. Zumino: CERN preprint TH 2120 (1975);L. Corwin, Y. Neeman andS. Sternberg:Rev. Mod. Phys.,47, 573 (1975).

    Article  MathSciNet  ADS  Google Scholar 

  9. See,e.g.,R. D. Schafer:An Introduction to Nonassociative Algebras (New York, N. Y., 1966).

  10. Cf.Günaydin andGürsey: ref. (3). It is to be observed, however, thatGünaydin andGürsey use an inequivalent realization of the split octonion algebra. Their construction is based on an enlargement of the ground field, whereas the construction given here realizes the split octonion algebra by means of a particular « complexification » of quaternions.

    Article  MATH  Google Scholar 

  11. Cf.Casalbuoni et al.: ref. (7). A similar attempt at the unification of the colour and space-time properties was also made byL. C. Biedenharn andH. van Dam: Duke University preprint, unpublished (January 1976).

    Article  ADS  Google Scholar 

  12. For a thorough analysis of supersymmetry algebras in a Weyl spinor basis see,e.g.,R. Haag,J. T. Lopuszanski andM. Sohnius:Nucl. Phys.,88 B, 257 (1974).

    MathSciNet  ADS  Google Scholar 

  13. The geometrical approach to supersymmetries has been developed by a number of authors. Cf., in particular,P. Nath andR. Arnowitt:Phys. Lett.,56 B, 177 (1975);R. Arnowitt, P. Nath andB. Zumino:Phys. Lett.,56 B, 81 (1975);L. N. Chang, K. Macrae andF. Mansouri:Phys. Lett.,57 B, 59 (1975);Phys. Rev. D,13, 235 (1976).

    Article  MathSciNet  ADS  Google Scholar 

  14. F. A. Berezin:The Method of Second Quantization (New York, N. Y., 1966).

  15. A derivation is a mapping of an algebraA into itself. IfD is a derivation anda 1,a 2 εA, thenD(a 1 a 2) = (Da 1)a 2 +a 1(Da 2); see ref. (10).

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Research supported in part by the U.S. Energy Research and Development Administration under Contract No. E(11-1)3285. Report No. COO 3285-28.

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Casalbuoni, R., Domokos, G. & Kövesi-Domokos, S. Coloured supersymmetry. Nuov Cim A 33, 432–446 (1976). https://doi.org/10.1007/BF02729861

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