Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-03-30
JHEP 0007 (2000) 027
Physics
High Energy Physics
High Energy Physics - Theory
17 pages, Latex. Small additions and corrections
Scientific paper
10.1088/1126-6708/2000/07/027
We describe string-theory and $d=11$ supergravity solutions involving symmetric spaces of constant negative curvature. Many examples of non-supersymmetric string compactifications on hyperbolic spaces $H_r$ of finite volume are given in terms of suitable cosets of the form $H_r/\Gamma $, where $\Gamma $ is a discrete group. We describe in some detail the cases of the non-compact hyperbolic spaces $F_2$ and $F_3$, representing the fundamental regions of $H_2$ and $H_3$ under $SL(2,Z)$ and the Picard group, respectively. By writing $AdS$ as a U(1) fibration, we obtain new solutions where $AdS_{2p+1}$ gets untwisted by T-duality to ${\bf R}\times SU(p,1)/(SU(p)\times U(1))$. Solutions with time-dependent dilaton field are also constructed by starting with a solution with NS5-brane flux over $H_3$. A new class of non-supersymmetric conformal field theories can be defined via holography.
Kehagias Alexandros A.
Russo Jorge G.
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