1202.5046 (Karl-Philip Gemmer et al.)

Heterotic string plus five-brane systems with asymptotic AdS3    [PDF]

Karl-Philip Gemmer, Alexander S. Haupt, Olaf Lechtenfeld, Christoph Nölle, Alexander D. Popov

We present NS1+NS5-brane solutions of heterotic supergravity on curved
geometries. They interpolate between a near horizon AdS3 x X^k x T^{7-k} region
and R^{1,1} x c(X^k) x T^{7-k}, where X^k (with k = 3,5,6,7) is a k-dimensional
geometric Killing spinor manifold, c(X^k) its Ricci-flat cone and T^{7-k} a
(7-k)-torus. The solutions require first order alpha'-corrections to the field
equations, and special point-like instantons play an important role, whose
singular support is a calibrated submanifold wrapped by the NS5-brane. It is
also possible to add a gauge anti-5-brane. We determine the super isometries of
the near horizon geometry which are supposed to appear as symmetries of the
holographically dual two-dimensional conformal field theory.

View original: http://arxiv.org/abs/1202.5046