Exact Effective Action and Spacetime Geometry in Gauged WZW Models
arXiv:hep-th/9301047 · doi:10.1103/PhysRevD.48.844
Abstract
We present an effective quantum action for the gauged WZW model . It is conjectured that it is valid to all orders of the central extension on the basis that it reproduces the exact spacetime geometry of the zero modes that was previously derived in the algebraic Hamiltonian formalism. Besides the metric and dilaton, the new results that follow from this approach include the exact axion field and the solution of the geodesics in the exact geometry. It is found that the axion field is generally non-zero at higher orders of even if it vanishes at large . We work out the details in two specific coset models, one non-abelian, i.e. and one abelian, i.e $SL(2,\IR)\otimes SO(1,1)^{d-2}/SO(1,1)$. The simplest case $SL(2,\IR)/\IR$ corresponds to a limit.
20 pages, harvmac, USC-93/HEP-B1, (The exact general expression for the dilaton is added in Sec.5)
References in corpus (15)
- A Closed, Expanding Universe in String Theory
- Conformally Exact Metric and Dilaton in String Theory on Curved Spacetime
- An Equivalence Between Momentum and Charge in String Theory
- Strings on Curved Spacetimes: Black Holes, Torsion, and Duality
- Generalized Duality and Singular Strings in Higher Dimensions
- A Superstring Theory in Four Curved Space-Time Dimensions
- Some Exact Solutions of String Theory in Four and Five Dimensions
- Global Analysis of New Gravitational Singularities in String and Particle Theories
- Conformally Exact Results for SL(2,R)\times SO(1,1)^{d-2}/SO(1,1) Coset Models
- Exact Bosonic and Supersymmetric String Black Hole Solutions
- string model in curved spacetime and exact conformal results
- Exact Solutions of Four Dimensional Black Holes in String Theory
- Perturbations of a Stringy Black Hole
- Heterotic String Models in Curved Spacetime
- Superstrings on Curved Spacetimes
Cited by in corpus (36)
- Exact Three Dimensional Black Holes in String Theory
- Pohlmeyer reduction of AdS_5 x S^5 superstring sigma model
- Gauged WZW models and Non-abelian duality
- On exact solutions and singularities in string theory
- Ghost-Free Spectrum of a Quantum String in SL(2,R) Curved Spacetime
- Integrable 2d sigma models: quantum corrections to geometry from RG flow
- On the tensionless limit of gauged WZW models
- On field redefinitions and exact solutions in string theory
- Antisymmetric tensor coupling and conformal invariance in sigma models corresponding to gauged WZNW theories
- Strings in Plane Wave Backgrounds Revisited
- An Exact String Theory Model of Closed Time-Like Curves and Cosmological Singularities
- Heterotic Resolved Conifolds with Torsion, from Supergravity to CFT
- Exact Primordial Black Strings in Four Dimensions
- An action for the exact string black hole
- Nonsingular 2-D Black Holes and Classical String Backgrounds
- Double-Scaling Limit of Heterotic Bundles and Dynamical Deformation in CFT
- Non-abelian Toda theory on AdS and AdS/CFT duality
- On the Target-Space Geometry of Open-String Orientation-Orbifold Sectors
- Exact non-abelian duality
- On Some New Black String Solutions in Three Dimensions
- Power-law singularities in string theory and M-theory
- Non-Singular String-Cosmologies From Exact Conformal Field Theories
- Local models of heterotic flux vacua: spacetime and worldsheet aspects
- Perturbed Gauged WZNW Models
- Integration of the SL(2,R)/U(1) Gauged WZNW Model with Periodic Boundary Conditions
- New Spin-Two Gauged Sigma Models and General Conformal Field Theory
- The Exact Geometry of a Kerr-Taub-NUT Solution of String Theory
- Field Redefinitions in String Theory as a Solution Generating Technique
- Exact O(d,d) Transformations in WZW Models
- Conformally Exact Black Hole Perturbed by a Marginal Operator
- Kalb-Ramond field, black holes and black strings in (2 + 1)D
- Global properties of an exact string theory solution in two and four dimensions
- Deformations of anti-de Sitter black holes
- Naked Singularities in Four-Dimensional String Backgrounds
- SO(3) \times U(1) isometric instantons with non abelian hair in four dimensional string theory
- One-loop effect in the charged 2D black hole near extremality