Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-11-16
Phys.Lett. B400 (1997) 15-20
Physics
High Energy Physics
High Energy Physics - Theory
9 pages, plain Tex
Scientific paper
10.1016/S0370-2693(97)00317-1
Two-dimensional gravity in the light-cone gauge was shown to exhibit an underlying sl(2,R) current algebra. It is the purpose of this note to offer a possible explanation about the origin of this important algebra. The essential point is that two-dimensional gravity is governed by a topological field theory. The gauge group is sl(2,R) and it is this enhanced gauge group that yields Polyakov's current algebra.
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