title: 1+1 dimensional compactifications of string theory.
abstract: We argue that stable, maximally symmetric compactifications of string theory to 1+1 dimensions are in conflict with holography. In particular, the finite horizon entropies of the Rindler wedge in 1+1 dimensional Minkowski and anti-de Sitter space, and of the de Sitter horizon in any dimension, are inconsistent with the symmetries of these spaces. The argument parallels one made recently by the same authors, in which we demonstrated the incompatibility of the finiteness of the entropy and the symmetries of de Sitter space in any dimension. If the horizon entropy is either infinite or zero, the conflict is resolved.
authors.affiliation: Korea Institute for Advanced Study and Department of Mathematics and Applied Mathematics, University of Cape Town, 7701 Rondebosch, Cape Town, South Africa.
authors.forename: Naureen
authors.initials: N
authors.lastname: Goheer
authors.forename: Matthew
authors.initials: M
authors.lastname: Kleban
authors.forename: Leonard
authors.initials: L
authors.lastname: Susskind