A New Deconstruction of Little String Theory

We present evidence for a new deconstruction of Little String Theory (LST).The starting point is a four-dimensional conformal field theory on its Higgsbranch which provides a lattice regularization of six-dimensional gauge theory.We argue that the corresponding continuum limit is a 't Hooft large-N limit ofthe same four-dimensional theory on an S-dual confining branch. The AdS/CFTcorrespondence is then used to study this limit in a controlled way. We findthat the limit yields LST compactified to four dimensions on a torus of fixedsize. The limiting theory also contains other massive and massless states whichare completely decoupled. The proposal can be adapted to deconstructDouble-Scaled Little String Theory and provides the first example of a large-Nconfining gauge theory in four dimensions with a fully tractable string theorydual.Comment: LaTeX file, 50 pages. Minor improvements, references adde