Wieland gave his ILQGS talk yesterday, 16 September. Audio and slides are on line.(adsbygoogle = window.adsbygoogle || []).push({});

Title:Covariant loop quantum gravity: Its classical action, phase space and gauge symmetries

http://relativity.phys.lsu.edu/ilqgs/wieland091614.pdf

http://relativity.phys.lsu.edu/ilqgs/wieland091614.wav

The short title was "The spin foam action"

Abstract:I present an action for simplicial gravity in first-order area-connection variables. The theory has a Hamiltonian and local gauge symmetries. Generic solutions represent twisted geometries, and have curvature – there is a deficit angle around triangles.

Some references:

*ww, New action for simplicial gravity in four dimensions (2014), arXiv:1407.0025.

*ww, One-dimensional action for simplicial gravity in three dimensions, Phys. Rev. D 90 (2014), arXiv:1402.6708.

*ww, Hamiltonian spinfoam gravity, Class. Quant. Grav. 31 (2014), arXiv:1301.5859.

*M Cortês and L Smolin, Spin foam models as energetic causal sets (2014), arXiv:1407.0032.

*L Freidel and S Speziale, From twistors to twisted geometries, Phys. Rev. D 82 (2010), arXiv:1006.0199.

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# Spin foam phase space, classical action (Wieland's talk is online)

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