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Closed and open string theories in n...

Murthy, Sameer.

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Closed and open string theories in non-critical backgrounds.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Closed and open string theories in non-critical backgrounds./
Author:	Murthy, Sameer.
Description:	117 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4084.
Contained By:	Dissertation Abstracts International65-08B.
Subject:	Physics, Elementary Particles and High Energy. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3143419
ISBN:	0496011685

Closed and open string theories in non-critical backgrounds.
Murthy, Sameer.

Closed and open string theories in non-critical backgrounds. - 117 p.

Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4084.

Thesis (Ph.D.)--Princeton University, 2004.

This thesis is a study of closed and open string theories in low dimensional spacetimes, and the various relations between these theories. In particular, we focus on the theory of the two-dimensional black hole.

ISBN: 0496011685Subjects--Topical Terms:

1019488
Physics, Elementary Particles and High Energy.

Closed and open string theories in non-critical backgrounds.
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020 $a 0496011685
035 $a (UnM)AAI3143419
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040 $a UnM $c UnM
100 1 $a Murthy, Sameer. $3 1932783
245 1 0 $a Closed and open string theories in non-critical backgrounds.
300 $a 117 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4084.
500 $a Adviser: Nathan Seiberg.
502 $a Thesis (Ph.D.)--Princeton University, 2004.
520 $a This thesis is a study of closed and open string theories in low dimensional spacetimes, and the various relations between these theories. In particular, we focus on the theory of the two-dimensional black hole.
520 $a We first study closed strings in the background of the Euclidean two-dimensional black hole (SL2( R )/U(1)) tensored with flat space, using the duality relating these theories to non-critical superstrings described by the supersymmetric sine-Liouville interaction on the worldsheet. We point out a subtlety in their geometric interpretation, and clarify the symmetry structure of the theories based on the understanding of these theories as near horizon limits of wrapped NS5-branes. In one such example (cigar x R6 ), we use the brave description to understand the enhancement of the global symmetry in the coset theory from U(1) to SO(3) under which the sine-Liouville and cigar interactions are related. In the same example, a worldsheet description of the moduli space R4/Z2 is presented.
520 $a We then study open strings in the topologically twisted Euclidean two-dimensional black hole which is equivalent to 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. 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 behavior 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 localized to the physical states, which leads to an interesting matrix model.
520 $a Finally, we present evidence that the worldvolume theory of N unstable D-particles in type IIB superstring theory in two-dimensions is represented by the supersymmetric matrix model of Marinari and Parisi. This identification suggests that the matrix model gives a holographic descriptions of superstrings in a two-dimensional black hole geometry.
590 $a School code: 0181.
650 4 $a Physics, Elementary Particles and High Energy. $3 1019488
690 $a 0798
710 2 0 $a Princeton University. $3 645579
773 0 $t Dissertation Abstracts International $g 65-08B.
790 1 0 $a Seiberg, Nathan, $e advisor
790 $a 0181
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3143419