Liouville D-branes in two-dimensional strings and open string field theory

Ghoshal, Debashis ; Mukhi, Sunil ; Murthy, Sameer (2004) Liouville D-branes in two-dimensional strings and open string field theory Journal of High Energy Physics, 2004 (11). 027-027. ISSN 1126-6708

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Official URL: http://iopscience.iop.org/1126-6708/2004/11/027

Related URL: http://dx.doi.org/10.1088/1126-6708/2004/11/027

Abstract

We study open strings in the noncritical c = 1 bosonic string theory compactified on a circle at self-dual radius. These strings live on D-branes that are extended along the Liouville direction (FZZT branes). We present explicit expressions for the disc two- and three-point functions of boundary operators in this theory, as well as the bulk-boundary two-point function. The expressions obtained are divergent because of resonant behaviour at self-dual radius. However, these can be regularised and renormalized in a precise way to get finite results. The boundary correlators are found to depend only on the differences of boundary cosmological constants, suggesting a fermionic behaviour. We initiate a study of the open-string field theory localised to the physical states, which leads to an interesting matrix model.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics Publishing.
Keywords:Topological Strings; String Field Theory; Matrix Models; Conformal Field Models in String Theory
ID Code:20944
Deposited On:20 Nov 2010 13:18
Last Modified:17 May 2016 05:11

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