Testing Lattice Quantum Gravity in 2+1 Dimensions

Details Testing Lattice Quantum Gravity in 2+1 Dimensions Testing Lattice Quantum Gravity in 2+1 Dimensions

2011-10-31

arxiv.org/abs/1110.6880v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 11 figures

Scientific paper

Borrowing techniques from cosmology, I compute the power spectrum of quantum fluctuations in (2+1)-dimensional causal dynamical triangulations, a promising discrete path integral approach to quantum gravity. The results agree with those of canonical quantization to a high degree of precision, providing strong evidence for the equivalence of the two approaches and for the validity of the discrete method.

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