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A twistor formulation of the heterotic D=10 superstring with manifest (8,0) worldsheet supersymmetry | | F. Delduc
; A. Galperin
; P. Howe
; E. Sokatchev
; | | Date: |
14 Jul 1992 | | Journal: | Phys.Rev. D47 (1993) 578-593 | | Subject: | hep-th | | Abstract: | We propose a new formulation of the heterotic $D=10$ Green-Schwarz superstring whose worldsheet is a superspace with two even and eight odd coordinates. The action is manifestly invariant under both target-space supersymmetry and a worldsheet reparametrisation supergroup. It contains only a finite set of auxiliary fields. The key ingredient are the commuting spinor (twistor) variables, which naturally arise as worldsheet superpartners of the target space Grassmann coordinates. These spinors parametrise the sphere $S^8$ regarded as a coset space of the $D=10$ Lorentz group. The sphere is associated with the lightlike vector of one of the string Virasoro constraints. The origin of the on-shell $D=10$ fermionic kappa symmetry of the standard Green-Schwarz formulation is explained. An essential and unusual feature is the appearance of the string tension only on shell as an integration constant. | | Source: | arXiv, hep-th/9207050 | | Services: | Forum | Review | PDF | Favorites | |
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