Classical Symmetries of Some Two-Dimensional Models Coupled to Gravity

Details Classical Symmetries of Some Two-Dimensional Models Coupled to Gravity Classical Symmetries of Some Two-Dimensional Models Coupled to Gravity

1995-06-11

arxiv.org/abs/hep-th/9506076v2

Nucl.Phys. B454 (1995) 427-448

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, latex

Scientific paper

10.1016/0550-3213(95)00455-2

This paper is a sequel to one in which we examined the affine symmetry algebras of arbitrary classical principal chiral models and symmetric space models in two dimensions. It examines the extension of those results in the presence of gravity. The main result is that even though the symmetry transformations of the fields depend on the gravitational background, the symmetry algebras of these classical theories are completely unchanged by the presence of arbitrary gravitational backgrounds. On the other hand, we are unable to generalize the Virasoro symmetries of the flat-space theories to theories with gravity.

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