5 papers
Thoughts on Membranes, Matrices and Non-Commutativity
Martin Cederwall
We review the passage from the supermembrane to matrix theory via a consistent truncation following a non-commutative deformation in light-cone gauge. Some indications are given th…
Generalised 11-dimensional supergravity
Martin Cederwall, Ulf Gran, Mikkel Nielsen +1
The low-energy effective dynamics of M-theory, eleven-dimensional supergravity, is taken off-shell in a manifestly supersymmetric superspace formulation. We show that a previously…
Problems with Duality in N=2 Super-Yang-Mills Theory
Martin Cederwall
Actual calculations of monopole and dyon spectra have previously been performed in N=4 SYM and in N=2 SYM with gauge group SU(2), and are in total agreement with duality conjecture…
Current Algebras
Martin Cederwall, Christian R. Preitschopf
We present -algebras as generalized Kac-Moody algebras. A number of free-field representations is found. We construct the octonionic projective spaces .
Introduction to Division Algebras, Sphere Algebras and Twistors
Martin Cederwall
A very basic introduction is given to the rôles of division algebras and the related sphere algebras concerning the structure of space-time in the dimensionalities $D\is 3,4,6$ and…