N Category Approach To Quantum Gravity

### n-Category approach to quantum gravity

*This Week's Finds in Mathematical Physics*(Week 220) has a good article on quantum gravity.- John Baez leads a research group at the University of California Riverside, devoted to the application of n-Categories and related ideas in physics. Here is a list of his group's papers.
*A history of n-categorical physics*, John Baez and Aaron Lauda (draft version).*Categorification*, John Baez and James Dolan, in*Higher Category Theory*, edited by Ezra Getzler and Mikhail Kapranov, Contemp. Math. 230, American Mathematical Society, Providence, Rhode Island, 1998, pp. 1-36.

- Louis Crane has also made significant contributions to the categorical approach to quantum gravity and relativity. (Louis Crane Wikipedia entry).
*Categorical Geometry and the Mathematical Foundations of Quantum General Relativity*, Louis Crane, contribution to the*Cambridge University Press*volume on quantum gravity (2006).