Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2009-11-23
Phys. Rev. D 82, 064018 (2010)
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
13 pages, 3 figures. v3: Some minor changes and clarifications. Virtually identical with the version published in Physical Rev
Scientific paper
10.1103/PhysRevD.82.064018
Motivated by phenomenological questions in quantum gravity, we consider the
propagation of a scalar field on a random lattice. We describe a procedure to
calculate the dispersion relation for the field by taking a limit of a periodic
lattice. We use this to calculate the lowest order coefficients of the
dispersion relation for a specific one-dimensional model.
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