Two-Dimensional Unoriented Strings And Matrix Models

Abstract

We investigate unoriented strings and superstrings in two dimensions and their dual matrix quantum mechanics. Most of the models we study have a tachyon tadpole coming from the RP^2 worldsheet which needs to be cancelled by a renormalization of the worldsheet theory. We find evidence that the dual matrix models describe the renormalized theory. The singlet sector of the matrix models is integrable and can be formulated in terms of fermions moving in an external potential and interacting via the Calogero-Moser potential. We show that in the double-scaling limit the latter system exhibits particle-hole duality and interpret it in terms of the dual string theory. We also show that oriented string theories in two dimensions can be continuously deformed into unoriented ones by turning on non-local interactions on the worldsheet. We find two unoriented superstring models for which only oriented worldsheets contribute to the S-matrix. A simple explanation for this is found in the dual matrix model.

36 pages, harvmac, 2 eps figures

References in corpus (14)

• The statistics of string/M theory vacua
• Strings from Tachyons
• A Matrix Model Dual of Type 0B String Theory in Two Dimensions
• D-brane Decay in Two-Dimensional String Theory
• Classical and Quantum D-branes in 2D String Theory
• Non-Perturbative Effects in Matrix Models and D-branes
• Matrix Cosmology
• Two-dimensional superstrings and the supersymmetric matrix model
• On the S-matrix of Type 0 String Theory
• Type 0 Strings in a 2-d Black Hole
• On Boundary Perturbations in Liouville Theory and Brane Dynamics in Noncritical String Theories
• On the BCFT Description of Holes in the c=1 Matrix Model
• D-brane Dynamics in the c=1 Matrix Model
• Tadpole Cancellation in Unoriented Liouville Theory

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• Tree-Level Stability Without Spacetime Fermions: Novel Examples in String Theory
• Solitons and giants in matrix models
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• The Moduli Space and Phase Structure of Heterotic Strings in Two Dimensions
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• Solitons in the Calogero model for distinguishable particles
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• Anomaly Cancellation in Noncritical String Theory
• Characterisation of a Thin Fully Depleted SOI Pixel Sensor with High Momentum Charged Particles
• Crosscap states in N=2 Liouville theory
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