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gr-qc2017★ 37 cited
Asymptotic analysis of the EPRL model with timelike tetrahedra
Wojciech Kaminski, Marcin Kisielowski, Hanno Sahlmann
We perform the stationary phase analysis of the vertex amplitude for the EPRL spin foam model extended to include timelike tetrahedra. We analyse both, tetrahedra of signature $---…
gr-qc2017
Relation between Regge calculus and BF theory on manifolds with defects
Marcin Kisielowski
In Regge calculus the space-time manifold is approximated by certain abstract simplicial complex, called a pseudo-manifold, and the metric is approximated by an assignment of a len…