Transmutation of Pure 2-D Supergravity Into Topological 2-D Gravity and Other Conformal Theories

Details Transmutation of Pure 2-D Supergravity Into Topological 2-D Gravity and Other Conformal Theories Transmutation of Pure 2-D Supergravity Into Topological 2-D Gravity and Other Conformal Theories

1992-06-04

arxiv.org/abs/hep-th/9206019v1

Phys.Lett. B288 (1992) 59-68

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, PAR-LPTHE 92-22

Scientific paper

10.1016/0370-2693(92)91954-8

We consider the BRST and superconformal properties of the ghost action of 2-D supergravity. Using the background spin structure on the worldsheet, we show that this action can be transformed by canonical field transformations to reach other conformal models such as the 2-D topological gravity or the chiral models for which the gauge variation of the action reproduces the left or right conformal anomaly. Our method consists in using the gravitino and its ghost as fundamental blocks to build fields with different conformal weights and statistics. This indicates in particular that the twisting of a conformal model into another one can be classically interpreted as a change of "field representation" of the superconformal symmetry.

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