nLab 10j symbol

In the context of fixed triangulations of spacetime arising in spin foam models?, the 10j symbol is a spin network that arises in the partition function for the Barrett-Crane model? of Riemannian quantum gravity?. Greg Egan, J. Daniel Christensen, and John Baez formulated an algorithm in C++ to describe these symbols that arise in this discrete spin foam model.


A 10j symbol is a spin(4) spin network containing five vertices and ten edges, where the edges are labels by spins. This symbol can be understood as a function which receives ten spins as input and produces a complex number as output, this process underpins the calculation of the partition function for the Barrett-Crane model?, which depends on the contraction of tensors at the vertices.


Created on January 28, 2021 at 18:10:45. See the history of this page for a list of all contributions to it.