Variational methods and effective actions in string models
- 1 July 1987
- journal article
- Published by IOP Publishing in Classical and Quantum Gravity
- Vol. 4 (4) , 791-797
- https://doi.org/10.1088/0264-9381/4/4/016
Abstract
Effective actions motivated by zero-order and first-order actions are examined. Particular attention is devoted to a variational procedure that is consistent with the structure equations involving the Lorentz connection. Attention is drawn to subtleties that can arise in varying higher-order actions and an efficient procedure developed to handle these cases using the calculus of forms. The effect of constrained variations on the field equations is discussed.Keywords
This publication has 13 references indexed in Scilit:
- Torsion in an extended Chapline-Manton theoryPhysics Letters B, 1986
- Strings in background fieldsNuclear Physics B, 1985
- Kaluza-Klein theory with the Lanczos lagrangianPhysics Letters A, 1985
- Curvature squared terms and string theoriesPhysics Letters B, 1985
- Vacuum configurations for superstringsNuclear Physics B, 1985
- Quantum string theory effective actionNuclear Physics B, 1985
- Anomaly cancellations in supersymmetric D = 10 gauge theory and superstring theoryPhysics Letters B, 1984
- Unification of Yang-Mills theory and supergravity in ten dimensionsPhysics Letters B, 1983
- Weyl scalings and spinor matter interactions in scalar-tensor theories of gravitationPhysics Letters B, 1982
- A note on a generalisation of Weyl's theory of gravitationJournal of Physics A: General Physics, 1982