Boosting Away Singularities from Conformal String Backgrounds

Abstract

Generalizing our previous work, we show how $O(d,d)$ transformations can be used to "boost away" in new dimensions the physical singularities that occur generically in cosmological and/or black-hole string backgrounds. As an example, we show how a recent model by Nappi and Witten can be made singularity-free via $O(3,3)$ boosts involving a fifth dimension.

11 pages, CERN-TH.6634/92

References in corpus (11)

• Elements of String Cosmology
• Duality and Dilaton
• Twisting Classical Solutions in Heterotic String Theory
• $O(d,d)$-Covariant String Cosmology
• Manifestly $O(d,d)$ Invariant Approach to Space-Time Dependent String Vacua
• Generalized Duality in Curved String-Backgrounds
• An Equivalence Between Momentum and Charge in String Theory
• Target Space Duality as a Symmetry of String Field Theory
• Higher Order Conformal Invariance of String Backgrounds Obtained by O(d,d) Transformations
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Cited by in corpus (48)

• Pre-Big-Bang in String Cosmology
• Target Space Duality in String Theory
• The Pre-Big Bang Scenario in String Cosmology
• Superstring Cosmology
• Singularity-free cosmological solutions of the superstring effective action
• Modular Cosmology
• Exact Duality Symmetries in CFT and String Theory
• Marginal Deformations of WZNW and Coset Models from O(d,d) Transformation
• Gauged WZW models and Non-abelian duality
• O(2,2) Transformations and the String Geroch Group
• Dynamical Topology Change in String Theory
• Four Dimensional Plane Wave String Solutions with Coset CFT Description
• De Sitter solutions in N=4 matter coupled supergravity
• Strings in Plane Wave Backgrounds Revisited
• Removing Singularities
• Strings in Singular Time-Dependent Backgrounds
• Duality invariant class of exact string backgrounds
• Initial Conditions and the Structure of the Singularity in Pre-Big-Bang Cosmology
• M-theory resolution of four-dimensional cosmological singularities via U-duality
• Gravitational waves in non-singular string cosmologies
• On `rolling moduli' solutions in string cosmology
• The Worldsheet Perspective of T-duality Symmetry in String Theory
• Regular Cosmological Examples of Tree-Level Dilaton-Driven Models
• S-duality and Compactification of type IIB Superstring Action
• Dynamical Topology Change, Compactification and Waves in String Cosmology
• Topology changing processes and symmetries of string effective action
• Duality and Integrability of Two Dimensional String Effective Action
• Duality, Monodromy and Integrability of Two Dimensional String Effective Action
• Rippled Cosmological Dark Matter from Damped Oscillating Newton Constant
• Singularity free dilaton-driven cosmologies and pre-little-bang
• On Some New Black String Solutions in Three Dimensions
• Four Dimensional String-String Solutions and Symmetries of String Effective Action
• Duality Symmetry of String Theory: A Worldsheet Perspective
• Symmetries for generating string cosmologies
• Low-energy graceful exit in anisotropic string cosmology backgrounds
• Qualitative evolution in higher-loop string cosmology
• Penrose Limits, the Colliding Plane Wave Problem and the Classical String Backgrounds
• Inhomogeneous String Cosmology Solutions with Regular Spacetime Curvature
• On the Rotating Charged Black String Solution
• Coset Models Obtained by Twisting WZW Models and Stringy Charged Black Holes in Four Dimensions
• String Cosmology: The Pre-Big Bang Scenario
• T-duality of NSR superstring: The worldsheet perspective
• Symmetries of Four-dimensional String Effective Action with Cosmological Constant
• Field Redefinitions in String Theory as a Solution Generating Technique
• Three dimensional regular black string via loop corrections
• Exact O(d,d) Transformations in WZW Models
• T-duality and Scattering of Stringy States
• Naked Singularities in Four-Dimensional String Backgrounds