
Spin foam models, loop quantum gravity, and group field theory are discussed as quantum gravity candidate theories and usually involve a continuous Lie group. We advocate here to consider quantum gravity-inspired models with finite groups, firstly as a test bed for the full theory and secondly as a class of new lattice theories possibly featuring an analogue diffeomorphism symmetry. To make these notes accessible to readers outside the quantum gravity community, we provide an introduction to some essential concepts in the loop quantum gravity, spin foam, and group field theory approach and point out the many connections to the lattice field theory and the condensed-matter systems.
High Energy Physics - Theory, Quantum Physics, 4902 Mathematical Physics, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), General Relativity and Quantum Cosmology, High Energy Physics - Theory (hep-th), 49 Mathematical Sciences, 5106 Nuclear and Plasma Physics, Quantum Physics (quant-ph), 51 Physical Sciences, 5107 Particle and High Energy Physics
High Energy Physics - Theory, Quantum Physics, 4902 Mathematical Physics, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), General Relativity and Quantum Cosmology, High Energy Physics - Theory (hep-th), 49 Mathematical Sciences, 5106 Nuclear and Plasma Physics, Quantum Physics (quant-ph), 51 Physical Sciences, 5107 Particle and High Energy Physics
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