Gowdy cosmology and two-dimensional gravity

We obtain the Gowdy cosmology by compactifying (3+1)-dimensional general relativity on a two-torus {ital T}{sup 2}. We fix the conformal gauge in the resulting effective (1+1)-dimensional theory and show that it is equivalent to a nonlinear {sigma} model with a background minisuperspace metric and a...

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Veröffentlicht in:	Physical review. D, Particles and fields Particles and fields, 1991-02, Vol.43 (4), p.1199-1211
1. Verfasser:	MCGUIGAN, M
Format:	Artikel
Sprache:	eng
Schlagworte:	640106 - Astrophysics & Cosmology- Cosmology CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Classical and quantum physics: mechanics and fields COMPOSITE MODELS COSMOLOGY ELEMENTARY PARTICLES Exact sciences and technology EXTENDED PARTICLE MODEL FIELD THEORIES FOUR-DIMENSIONAL CALCULATIONS GENERAL RELATIVITY THEORY GRAVITATIONAL FIELDS KALUZA-KLEIN THEORY MATHEMATICAL MODELS METRICS PARTICLE MODELS Physics POSTULATED PARTICLES QUANTUM FIELD THEORY QUANTUM GRAVITY QUARK MODEL SCALAR FIELDS SIGMA MODEL STRING MODELS TACHYONS TENSOR FORCES TWO-DIMENSIONAL CALCULATIONS UNIFIED-FIELD THEORIES VECTOR FIELDS
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