1.1k citations · 4.7k across the 104 of their papers we have counts for
Showing 2001 · gr-qcShow all
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gr-qc2001★ 29 cited
Positivity of Spin Foam Amplitudes
John C. Baez, J. Daniel Christensen
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 1…
gr-qc2001★ 58 cited
The Meaning of Einstein's Equation
John C. Baez, Emory F. Bunn
This is a brief introduction to general relativity, designed for both students and teachers of the subject. While there are many excellent expositions of general relativity, few ad…
gr-qc2001★ 53 cited
Integrability for Relativistic Spin Networks
John C. Baez, John W. Barrett
The evaluation of relativistic spin networks plays a fundamental role in the Barrett-Crane state sum model of Lorentzian quantum gravity in 4 dimensions. A relativistic spin networ…