Holographic duals of long open strings
- Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)
- EFI and Department of Physics, University of Chicago, 5640 S. Ellis Avenue, Chicago, Illinois 60637 (United States)
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 semiclassical string world sheet, 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 NS5-branes, which can be analyzed using world sheet methods.
- OSTI ID:
- 21250432
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 2; Other Information: DOI: 10.1103/PhysRevD.78.026005; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CHIRAL SYMMETRY
CHIRALITY
CONDENSATES
DEFORMATION
EXPECTATION VALUE
FIELD THEORIES
HOLOGRAPHY
MASS
MESON SPECTROSCOPY
MESONS
QUANTUM CHROMODYNAMICS
QUANTUM OPERATORS
QUARKS
SEMICLASSICAL APPROXIMATION
SPACE-TIME
STRING MODELS
STRONG-COUPLING MODEL
SUPERSYMMETRY
WILSON LOOP