Barton Zwiebach

Starting with the two-derivative limit of D=2 string theory, we explore the space of T-duality invariant α′ corrections, a space that contains a point representing the fully α′-corrected classical string theory. Using a parametrization introduced by Gasperini and Veneziano we obtain black hole solutions in this theory space. We prove that the dual of a solution with a regular horizon must have a curvature singularity.

Abstract We report two surprising results on α′ corrections in string theory restricted to massless fields. First, for critical dimension Bianchi type I cosmologies with q scale factors only q−1 of them have nontrivial α′ corrections. In particular, for Friedmann-Robertson-Walker backgrounds all α′ corrections are trivial.

Essentials, Theory, and Applications By Barton Zwiebach A complete overview of quantum mechanics, covering essential concepts and results, theoretical foundations, and applications. Overview Author(s) Praise Summary A complete overview of quantum mechanics, covering essential concepts and results, theoretical foundations, and applications.