The Hessian in Spin Foam Models
Abstract We fill one of the remaining gaps in the asymptotic analysis of the vertex amplitudes of the Engle–Pereira–Rovelli–Livine (EPRL) spin foam models: We show that the Hessian is nondegenerate for the stationary points that corresponds to geometric nondegenerate 4 simplices. Our analysis covers the case when all faces are spacelike.
2013 ◽
2012 ◽
Vol 27
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pp. 1250164
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2003 ◽
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pp. 777-799
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pp. 015010
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pp. 1739-1761
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pp. 1183-1247
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