Some Comments On String Dynamics

Abstract

Three subjects are considered here: a self-dual non-critical string that appears in Type IIB superstring theory at points in $K3$ moduli space where the Type IIA theory has extended gauge symmetry; a conformal field theory singularity at such points which may signal quantum effects that persist even at weak coupling; and the rich dynamics of the real world under compactification, which may be relevant to some attempts to explain the vanishing of the cosmological constant.

26 pages

References in corpus (5)

• Phases of $N=2$ Theories In Two Dimensions
• Massless Black Holes and Conifolds in String Theory
• Criteria for Conformal Invariance of (0,2) Models
• Strong Coupling and the Cosmological Constant
• U-Duality and Integral Structures

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• Geometric Singularities and Enhanced Gauge Symmetries
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• Darboux coordinates, Yang-Yang functional, and gauge theory
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• Branes, Calabi-Yau Spaces, and Toroidal Compactification of the N=1 Six-Dimensional E_8 Theory
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• Little String Theories in Heterotic Backgrounds
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• Supersymmetric coupling of a self-dual string to a (2,0) tensor multiplet background
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• EFT of 6D SUSY RG Flows
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• Strings as sigma models and in the tensionless limit
• Exotic Aspects of Extended Field Theories
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