| 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. |
- Bengtsson, Ingemar, et al.
(författare)
-
Covariant superstrings do not admit covariant gauge fixing
- 1984
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The covariant action for superstrings is analysed by means of the Diracmethod, and the light front action is derived. The action gives riseto second class constraints which cannot be solved for in a covariant way. Covariant gauge fixing, in any conventional sense, cannot be applied, which leaves the question of covariant quantisationof the superstrings open. A similar statement holds for a masslesssupersymmetric point-particle.
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| 3. |
- Bengtsson, Ingemar, et al.
(författare)
-
Light cone actions for gravity and higher spins: some further results
- 1983
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- It has been suggested that field theories for arbitrary spin can be defined,using the light front formulation of dynamics. The higher order termsin the actions are discussed in this paper. We show that the gravity actioncan be written without ``time''-derivatives in the interaction termsin a way which appears generalisable to higher spin. Some problems forhigher spins are identified and briefly discussed.
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