Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-07-10
Phys.Lett. B436 (1998) 73-83
Physics
High Energy Physics
High Energy Physics - Theory
13 pages, LaTex, no figures, to appear in Phys. Lett. B
Scientific paper
10.1016/S0370-2693(98)00844-2
A well-defined chirally split functional integrating the 2D chirally split diffeomorphism anomaly is exhibited on an arbitrary compact Riemann surface without boundary. The construction requires both the use of the Beltrami parametrisation of complex structures and the introduction of a background metric possibly subject to a Liouville equation. This formula reproduces in the flat case the so-called Polyakov action. Although it works on the torus (genus 1), the proposed functional still remains to be related to a Wess-Zumino action for diffeomorphisms.
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