“School of Astronomy”
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| Paper IPM / Astronomy / 14403 |
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We consider a class of two-dimensional dilatonic models, and revisit them from the perspective of a new set of âpolar typeâ variables. These are motivated by recently defined variables within the spherically symmetric sector of 4D general relativity. We show that for a large class of dilatonic models, including the case with matter, one can perform a series of canonical transformations in such a way that the Poisson algebra of the constraints becomes a Lie algebra. Furthermore, we construct Dirac observables and a reduced Hamiltonian that accounts for the time evolution of the system
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