A tachyonic theory of closed oriented strings in D = 10. It results from a non-supersymmetric projection of the superstring that removes all fermionic excitations. The spectrum divides into two sectors, according to the boundary conditions of the left- and right-moving worldsheet supercurrents.
In addition to a tachyon, the NS-NS sector contains the universal massless part: metric, dilaton and antisymmetric tensor. The massless R-R sector contains two vectors and two 3-form potentials. The fermionic R-NS and NS-R sector are absent.
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Bibliography
M. B. Green, J. H. Schwarz and E. Witten, Superstring Theory, Cambridge University Press 1987.
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© 2004 Kluwer Academic Publishers
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Lozano, Y. et al. (2004). Type OA. In: Duplij, S., Siegel, W., Bagger, J. (eds) Concise Encyclopedia of Supersymmetry. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4522-0_669
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DOI: https://doi.org/10.1007/1-4020-4522-0_669
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