Three-dimensional Quantum Supergravity and Supersymmetric Spin Foam Models

Details Three-dimensional Quantum Supergravity and Supersymmetric Spin Foam Models Three-dimensional Quantum Supergravity and Supersymmetric Spin Foam Models

2003-07-25

arxiv.org/abs/hep-th/0307251v1

Adv.Theor.Math.Phys. 7 (2004) 951-1001

Physics

High Energy Physics

High Energy Physics - Theory

43 pages, 10 figures

Scientific paper

We show how super BF theory in any dimension can be quantized as a spin foam model, generalizing the situation for ordinary BF theory. This is a first step toward quantizing supergravity theories. We investigate in particular 3-dimensional (p=1,q=1) supergravity which we quantize exactly. We obtain a super-Ponzano-Regge model with gauge group OSp(1|2). A main motivation for our approach is the implementation of fermionic degrees of freedom in spin foam models. Indeed, we propose a description of the fermionic degrees of freedom in our model. Complementing the path integral approach we also discuss aspects of a canonical quantization in the spirit of loop quantum gravity. Finally, we comment on 2+1-dimensional quantum supergravity and the inclusion of a cosmological constant.

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