Abstract
A new gauge theory of gravity on flat spacetime has recently been developed by Lasenby, Doran, and Gull. Einstein’s principles of equivalence and general relativity are replaced by gauge principles asserting, respectively, local rotation and global displacement gauge invariance. A new unitary formulation of Einstein’s tensor illuminates long-standing problems with energy–momentum conservation in general relativity. Geometric calculus provides many simplifications and fresh insights in theoretical formulation and physical applications of the theory.
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Hestenes, D. Gauge Theory Gravity with Geometric Calculus. Found Phys 35, 903–970 (2005). https://doi.org/10.1007/s10701-005-5828-y
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DOI: https://doi.org/10.1007/s10701-005-5828-y