| 1. |
- Adawi, Tom, 1970, et al.
(författare)
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Goldstone tensor modes
- 1998
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Ingår i: J. High Energy Phys. 9902:001,1999.
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Tidskriftsartikel (refereegranskat)abstract
- In the context of brane solutions of supergravity, we discuss a general method to introduce collective modes of any spin by exploiting a particular way of breaking symmetries. The method is applied to the D3, M2 and M5 branes and we derive explicit expressions for how the zero-modes enter the target space fields, verify normalisability in the transverse directions and derive the corresponding field equations on the brane. In particular, the method provides a clear understanding of scalar, spinor, and rank r tensorial Goldstone modes, chiral as well as non-chiral, and how they arise from the gravity, Rarita-Schwinger, and rank r+1 Kalb-Ramond tensor gauge fields, respectively. Some additional observations concerning the chiral tensor modes on the M5 brane are discussed.
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| 2. |
- Adawi, Tom, 1970, et al.
(författare)
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Superembeddings, nonlinear supersymmetry and five-branes
- 1997
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Ingår i: Int.J.Mod.Phys.A13:4691-4716,1998.
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Tidskriftsartikel (refereegranskat)abstract
- We examine general properties of superembeddings, i.e., embeddings of supermanifolds into supermanifolds. The connection between an embedding procedure and the method of non-linearly realised supersymmetry is clarified, and we demonstrate how the latter arises as a special case of the former. As an illustration, the super-5-brane in 7 dimensions, containing a self-dual 3-form world-volume field strength, is formulated in both languages, and provides an example of a model where the embedding condition does not suffice to put the theory on-shell.
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| 3. |
- Bandos, Igor, et al.
(författare)
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Towards a complete twistorization of the heterotic string
- 1994
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Ingår i: Mod.Phys.Lett.A9 (1994) 2987.
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Tidskriftsartikel (refereegranskat)abstract
- In D=3,4,6 and 10 space-time dimensions considered is a string model invariant under transformations of N=1 space-time supersymmetry and n=D-2 local worldsheet supersymmetry with the both Virasoro constraints solved in the twistor form. The twistor solution survives in a modified form even in the presence of the heterotic fermions.
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| 4. |
- Brink, Lars, 1943, et al.
(författare)
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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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| 5. |
- Cederwall, Martin, 1961
(författare)
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A note on the relation between different forms of superparticle dynamics
- 1993
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Ingår i: Mod.Phys.Lett. A9 (1994) 967.
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Tidskriftsartikel (refereegranskat)abstract
- A formulation of D=10 superparticle dynamics is given that contain space-time and twistor variables. The set of constraints is entirely first class, and gauge conditions may be imposed that reduces the system to a Casalbuoni-Brink-Schwarz superparticle, a spinning particle or a twistor particle.
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| 6. |
- Cederwall, Martin, 1961, et al.
(författare)
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An action for the superfive-brane in D=11 supergravity
- 1997
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Ingår i: J. High Energy Phys. 9804:007,1998.
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Tidskriftsartikel (refereegranskat)abstract
- An alternative path is taken for deriving an action for the supersymmetric 5-brane in 11 dimensions. Selfduality does not follow from the action, but is consistent with the equations of motion for arbitrary supergravity backgrounds. The action involves a 2-form as well as a 5-form world-volume potential; inclusion of the latter makes the action, as well as the non-linear selfduality relation for the 3-form field strength, polynomial. The requirement of invariance under kappa-transformations determines the form of the selfduality relation, as well as the action. The formulation is shown to be equivalent to earlier formulations of 5-brane dynamics.
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| 7. |
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| 8. |
- Cederwall, Martin, 1961
(författare)
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Aspects of D-brane actions
- 1996
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Ingår i: Nucl.Phys.Proc.Suppl.56B:61-69,1997.
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Konferensbidrag (refereegranskat)abstract
- A couple of issues concerning the effective dynamics of D-branes in string theory are discussed. Primarily, I am concerned with linearization of the actions by introduction of non-propagating fields and a full super- and kappa-symmetric description of D-branes.
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| 9. |
- Cederwall, Martin, 1961
(författare)
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Bidivision algebra spinors in D=10 Minkowski geometry
- 1991
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Some geometrical properties of spinors in ten-dimensional Minkowski spaceare analysed, and are demonstrated to generalise the concept ofpure spinors to bi-division algebra spinors. In a unified treatment,they are shown to transform under orthogonal extensions ofthe algebra of space rotations and to be subjected to certainpurity constraints.
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| 10. |
- Cederwall, Martin, 1961
(författare)
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Boundaries of eleven-dimensional membranes
- 1997
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Ingår i: Mod.Phys.Lett.A12:2641-2645,1997.
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Tidskriftsartikel (refereegranskat)abstract
- The action for an 11-dimensional supermembrane contains a chiral Wess-Zumino-Witten model coupling to the E8 super-Yang-Mills theory on the end-of-the-world 9-brane. It is demonstrated that this boundary string theory is dictated both by gauge invariance and by kappa-symmetry.
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