Linear Dilatons, NS5-branes and Holography

Details Linear Dilatons, NS5-branes and Holography Linear Dilatons, NS5-branes and Holography

1998-08-24

arxiv.org/abs/hep-th/9808149v2

JHEP 9810:004,1998

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, Harvmac. Minor changes

Scientific paper

10.1088/1126-6708/1998/10/004

We argue that vacua of string theory which asymptote at weak coupling to linear dilaton backgrounds are holographic. The full string theory in such vacua is ``dual'' to a theory without gravity in fewer dimensions. The dual theory is generically not a local quantum field theory. Excitations of the string vacuum, which can be studied in the weak coupling region using worldsheet methods, give rise to observables in the dual theory. An interesting example is string theory in the near-horizon background of parallel NS5-branes, the CHS model, which is dual to the decoupled NS5-brane theory (``little string theory''). This duality can be used to study some of the observables in this theory and some of their correlation functions. Another interesting example is the ``old'' matrix model, which gives a holographic description of two dimensional string theory.

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