%0 Journal Article
%T Supersymmetry and Stationary Solutions in Dilaton-Axion Gravity
%A Renata Kallosh
%A David Kastor
%A Tomas Ortin
%A Tibor Torma
%J Physics
%D 1994
%I arXiv
%R 10.1103/PhysRevD.50.6374
%X New stationary solutions of $4$-dimensional dilaton-axion gravity are presented, which correspond to the charged Taub-NUT and Israel-Wilson-Perjes (IWP) solutions of Einstein-Maxwell theory. The charged axion-dilaton Taub-NUT solutions are shown to have a number of interesting properties: i) manifest $SL(2,R)$ symmetry, ii) an infinite throat in an extremal limit, iii) the throat limit coincides with an exact CFT construction. The IWP solutions are shown to admit supersymmetric Killing spinors, when embedded in $d=4,N=4$ supergravity. This poses a problem for the interpretation of supersymmetric rotating solutions as physical ground states. In the context of $10$-dimensional geometry, we show that dimensionally lifted versions of the IWP solutions are dual to certain gravitational waves in string theory.
%U http://arxiv.org/abs/hep-th/9406059v1