TENSORIAL CENTRAL CHARGES AND NEW SUPERPARTICLE MODELS WITH FUNDAMENTAL SPINOR COORDINATES

Modern Physics Letters A - Tập 14 Số 19 - Trang 1257-1272 - 1999
Igor A. Bandos1, J. Lukierski2
1Institute for Theoretical Physics, Technical University of Vienna, Wiedner Haupstrasse 8-10, A-1040 Wien, Austria
2Institute for Theoretical Physics, University of Wrocław, 50-204, Wrocław, Poland

Tóm tắt

We consider firstly simple D=4 superalgebra with six real tensorial central charges Zμν, and discuss its possible realizations in massive and massless cases. Massless case is dynamically realized by generalized Ferber–Shirafuji (FS) model with fundamental bosonic spinor coordinates. The Lorentz invariance is not broken due to the realization of central charges generators in terms of bosonic spinors. The model contains four fermionic coordinates and possesses three κ-symmetries thus providing the BPS configuration preserving 3/4 of the target space supersymmetries. We show that the physical degrees of freedom (eight real bosonic and one real Grassmann variable) of our model can be described by OSp (8|1) supertwistor. The relation with recent superparticle model by Rudychev and Sezgin is pointed out. Finally we propose a higher-dimensional generalization of our model with one real fundamental bosonic spinor. D=10 model describes massless superparticle with composite tensorial central charges and in D=11 we obtain zero-superbrane model with nonvanishing mass which is generated dynamically.

Từ khóa


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Thông tin xuất bản

Modern Physics Letters A

Tập 14 Số 19

1257-1272

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