Poisson algebra of 2d dimensionally reduced gravity

Details Poisson algebra of 2d dimensionally reduced gravity Poisson algebra of 2d dimensionally reduced gravity

2000-02-24

arxiv.org/abs/hep-th/0002207v2

JHEP0005:017,2000

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, minor corrections. To appear in JHEP

Scientific paper

10.1088/1126-6708/2000/05/017

Using a Lax pair based on twisted affine $sl(2,R)$ Kac-Moody and Virasoro algebras, we deduce a r-matrix formulation of two dimensional reduced vacuum Einstein's equations. Whereas the fundamental Poisson brackets are non-ultralocal, they lead to pure c-number modified Yang-Baxter equations. We also describe how to obtain classical observables by imposing reasonable boundaries conditions.

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