Gauge-invariant formulations of lineal gravities. (English) Zbl 0968.81546

Summary: It is shown that the currently studied “string-inspired” model for gravity on a line can be formulated as a gauge-invariant theory based on the Poincaré group with central extension – a formulation that complements and simplifies H. Verlinde’s construction based on the unextended Poincaré group.


81T40 Two-dimensional field theories, conformal field theories, etc. in quantum mechanics
83C99 General relativity
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