5 papers
New duality transformation in two-dimensional non-linear sigma models
N. Mohammedi
A new T-duality transformation is found in two-dimensional non-linear sigma models. This is a straightforward generalisation of Abelian and non-Abelian T-dualities.
On the Eleventh Dimension of String Theory
Noureddine Mohammedi
An explanation of the origin of the hidden eleventh dimension in string theory is given. It is shown that any two sigma models describing the propagation of string backgrounds are…
Classical Duality in Gauge Theories
Noureddine Mohammedi
A dual action is obtained for a general non-abelian and non-supersymmetric gauge theory at the classical level. The construction follows steps similar to those used in pure abelian…
A Dual Description of the Four Dimensional Non-Linear Sigma Model
N. Mohammedi, R. T. Moss, R. D. Simmons
The dual of the four dimensional non-linear sigma model is constructed using techniques familiar to string theory. This construction necessitates the introduction of a rank two ant…
Discrete Symmetry, Non-Commutative Geometry and Gravity
N. Mohammedi
We describe the geomety of a set of scalar fields coupled to gravity. We consider the formalism of a differential Z_2-graded algebra of matrices whose elements are diff…