| 1. |
- Bengtsson, Anders K.H., et al.
(författare)
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Uniqueness of superstring actions
- 1984
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Ingår i: Nucl.Phys.B254 (1985) 625.
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Tidskriftsartikel (refereegranskat)abstract
- We consider local counterterms to 4-dimensional gravity and 4- and 10-dimensional super-gravity theories in the light-front gauge. With the technique developed, we show that there are no local counterterms other than the lagrangian possible in the superstring thoeries. This is a strong indication that these theories are finite or at least renormalizable to allorders in the perturbation expansions.
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| 2. |
- Brink, Lars, 1943, et al.
(författare)
-
N=8 superconformal algebra and the superstring
- 1993
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Ingår i: Phys.Lett.B311 (1993) 76.
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Tidskriftsartikel (refereegranskat)abstract
- The superstring in D=3,4 and 6 is invariant under an N=D-2 superconformal algebra based on S^{D-3}. There is a direct relationship between this (world-sheet) symmetry and the super-Poincaré (target space) symmetry. We establish this relationship using the light-cone gauge, show how the statement generalizes to D=10 and examine the properties of the N=8 superconformal algebra and the possible implications of its existence.
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| 3. |
- Brink, Lars, 1943, et al.
(författare)
-
String field theory with chiral coordinates
- 1987
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Ingår i: Nucl.Phys.B293 (1987) 114.
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Tidskriftsartikel (refereegranskat)abstract
- Interesting string theories, such as the heterotic string, involve chiral coordinates, that is coordinates which are either right-moving or left-moving on the world sheet. In this paper the field theoretic formulation of such theories is studied with most emphasis on the light-cone gauge method although the main techniques would also apply in the various covariant approaches to string field theory. In the heterotic string the internal symmetry is described in terms of eight left-moving complex bosonic coordinates in a manner which parallels the treatment of fermionic Grassmann coordinates. The wave functions, and hence the free string fields, are described in these coordinates and the three-string interaction is derived from the requirements of supersymmetry and Lorentz invariance both in its functional form and in terms of its oscillator modes.
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