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Summary: We formulate two-dimensional topological gravity starting from local \(N=2\) superconformal geometry. The theory is free from the very beginning. The usual ``twisting'' of the \(N=2\) algebra emerges from symmetry breaking when we expand about a nonzero value for one of the ghost fields.
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Abstract There are two directions one might take to generalize supersymmetry and its models as we have presented them until this point: (a) to try to incorporate gravity as the fourth fundamental interaction, or (b) by using our experience with gauge theories, to try to make supersymmetry local.
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Supergravity, together with string theory, is one of the most significant developments in theoretical physics. Written by two of the most respected workers in the field, this is the first-ever authoritative and systematic account of supergravity. The book starts by reviewing aspects of relativistic field theory in Minkowski spacetime. After introducing
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