Searching for classical geometries in spin foam amplitudes: a numerical method
نویسندگان
چکیده
منابع مشابه
Positivity of Spin Foam Amplitudes
The amplitude for a spin foam in the Barrett–Crane model of Riemannian quantum gravity is given as a product over its vertices, edges and faces, with one factor of the Riemannian 10j symbols appearing for each vertex, and simpler factors for the edges and faces. We prove that these amplitudes are always nonnegative for closed spin foams. This means one can use the Metropolis algorithm to comput...
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2020
ISSN: 0264-9381,1361-6382
DOI: 10.1088/1361-6382/ab7ee1