24 citations · 38 across the 3 of their papers we have counts for
6 papers
T-Duality in Arbitrary String Backgrounds
Mark Evans, Ioannis Giannakis
T-Duality is a poorly understood symmetry of the space-time fields of string theory that interchanges long and short distances. It is best understood in the context of toroidal com…
Symmetry Principles for String Theory
Mark Evans, Ioannis Giannakis
The gauge symmetries that underlie string theory arise from inner automorphisms of the algebra of observables of the associated conformal field theory. In this way it is possible t…
An Infinite Dimensional Symmetry Algebra in String Theory
Mark Evans, Ioannis Giannakis, D. V. Nanopoulos
Symmetry transformations of the space-time fields of string theory are generated by certain similarity transformations of the stress-tensor of the associated conformal field theori…
From 2D conformal to 4D self-dual theories: quaternionic analyticity
V. Ogievetsky, F. Gursey, M. Evans
It is shown that self-dual theories generalize to four dimensions both the conformal and analytic aspects of two-dimensional conformal field theories. In the harmonic space languag…
Isolated States and the Classical Phase Spase of 2-d String Theory
Mark Evans, Ioannis Giannakis
We investigate the classical phase space of 2-d string theory. We derive the linearised covariant equations for the spacetime fields by considering the most general deformation of…
Deformations, Symmetries and Topological Degrees of Freedom of the String
Mark Evans, Ioannis Giannakis
We discuss three closely related questions; i)~Given a conformal field theory, how may we deform it? ii)~What are the symmetries of string theory? and iii)~Does string theory have…