Boundary States for the Rolling D-branes in NS5 Background

Nakayama, Yu; Sugawara, Yuji; Takayanagi, Hiromitsu

doi:10.1088/1126-6708/2004/07/020

Cited by 53 publications

(116 citation statements)

References 40 publications

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“…It is convenient to parameterize the (x, φ)-plane by the coordinate 13) in terms of which the hairpin shape (5.7) takes the simple form 14) or, equivalently, Re(U − 1) = 0. The worldsheet action (5.12) now takes the form…”

Section: D-branes In the Background Of N S5-branesmentioning

confidence: 99%

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Holographic duals of long open strings

2008

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We study the holographic map between long open strings, which stretch between D-branes separated in the bulk space-time, and operators in the dual boundary theory. We focus on a generalization of the Sakai-Sugimoto holographic model of QCD, where the simplest chiral condensate involves an operator of this type. Its expectation value is dominated by a semi-classical string worldsheet, as for Wilson loops. We also discuss the deformation of the model by this operator, and in particular its effect on the meson spectrum. This deformation can be thought of as a generalization of a quark mass term to strong coupling. It leads to the first top-down holographic model of QCD with a non-Abelian chiral symmetry which is both spontaneously and explicitly broken, as in QCD. Other examples we study include half-supersymmetric open Wilson lines, and systems of D-branes ending on N S5-branes, which can be analyzed using worldsheet methods.

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Section: D-branes In the Background Of N S5-branesmentioning

confidence: 99%

“…13 It is precisely the matrix appearing in the low-energy chiral Lagrangian, 14 which is usually written in terms of pion fields as U (x) = exp(iπ(x)/f π ).…”

mentioning

confidence: 99%

Holographic duals of long open strings

2008

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“…Following [100], a Lorentzian version of this boundary state has been studied to describe a time dependent process in which a D-brane falls into an NS5 branes (see e.g. [101,102,103,104]). …”

Section: D1 and D2 Branes In The Cigarmentioning

confidence: 99%

Non-compact string backgrounds and non-rational CFT

Schomerus

2006

Physics Reports

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This is an introduction to the microscopic techniques of non-rational bulk and boundary conformal field theory which are needed to describe strings moving in non-compact curved backgrounds. The latter arise e.g. in the context of AdS/CFTlike dualities and for studies of time-dependent processes. After a general outline of the central concepts, we focus on two specific but rather prototypical models: Liouville field theory and the 2D cigar. Rather than following the historical path, the presentation attempts to be systematic and self-contained.

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“…The works [57,58,59] have already investigated the exact CFT description. It would be interesting to study these setups further.…”

Section: Second Type Of Non-bps D4-branesmentioning

confidence: 99%

D-branes in little string theory

Israël

Pakman

Troost³

2005

Nuclear Physics B

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We analyze in detail the D-branes in the near-horizon limit of NS5-branes on a circle, the holographic dual of little string theory in a double scaling limit. We emphasize their geometry in the background of the NS5-branes and show the relation with D-branes in coset models. The exact one-point functions giving the coupling of the closed string states with the D-branes and the spectrum of open strings are computed.Using these results, we analyze several aspects of Hanany-Witten setups, using exact CFT analysis. In particular we identify the open string spectrum on the D-branes stretched between NS5-branes which confirms the low-energy analysis in brane constructions, and that allows to go to higher energy scales. As an application we show the emergence of the beta-function of the N=2 gauge theory on D4-branes stretching between NS5-branes from the boundary states describing the D4-branes. We also speculate on the possibility of getting a matrix model description of little string theory from the effective theory on the D1-branes. By considering D3-branes orthogonal to the NS5-branes we find a CFT incarnation of the Hanany-Witten effect of anomalous creation of D-branes. Finally we give an brief description of some non-BPS D-branes.

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Boundary States for the Rolling D-branes in NS5 Background

Cited by 53 publications

References 40 publications

Holographic duals of long open strings

Holographic duals of long open strings

Non-compact string backgrounds and non-rational CFT

D-branes in little string theory

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