Target space duality is a symmetry of string theory that maps a string theory in a background to a dual string theory in a dual background. For reviews see [1][2]. The map between T-dual backgroundsâ€¦ (More)

Adaptation is at the heart of sensation and nowhere is it more salient than in early visual processing. Light adaptation in photoreceptors is doubly dynamical: it depends upon the temporal structureâ€¦ (More)

We construct a non-chiral current algebra in two dimensions consistent with conformal invariance. We show that the conformal current algebra is realized in non-linear sigmamodels on supergroupâ€¦ (More)

We study non-compact Gepner models that preserve sixteen or eight supercharges in type II string theories. In particular, we develop an orbifolded Landau-Ginzburg description of these modelsâ€¦ (More)

We exhibit bound states in the spectrum of non-compact D-branes in N = 2 Liouville conformal field theory. We interpret these states in the study of D-branes in the near-horizon limit ofâ€¦ (More)

String theory on AdS3 space-times with boundary conditions that allow for black hole states has global asymptotic symmetries which include an infinite dimensional conformal algebra. Using theâ€¦ (More)