Quantum gravity is concerned with unifying Einstein's general theory of relativity with quantum theory into a single theoretical framework. At Perimeter Institute, researchers are actively pursuing a number of approaches to this problem including loop quantum gravity, spin foam models, asymptotic safety, emergent gravity, string theory, and causal set theory. We are also particularly interested in experimental implications of these different proposals. As the aim is a unification of the laws of physics into a single theory, the search for quantum gravity overlaps with other areas such as cosmology, particle physics and the foundations of quantum theory.
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General relativity as a quantum effective field theory
John Donoghue University of Massachusetts Amherst
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Higher-Dimensional Algebra: A Language for Quantum Spacetime
John Baez University of California, Riverside
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Dynamic Time: The "Missing Link" in the Search for a Unified Theory?
Avshalom Elitzur Israeli Institute for Advanced Research
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Spacetime regions as "quantum subsystems": glimmers of a pre-geometric perspective
Federico Piazza Centre de Physique Théorique
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Phenomenological quantum gravity: Pieces of the puzzle
Sabine Hossenfelder Ludwig-Maximilians-Universität München (LMU)
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Plasmaballs in large N gauge theory and localized black holes
Toby Wiseman Imperial College London
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Topological preon models: a braid new world
Sundance Bilson-Thompson University of Adelaide
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Effective theories for loop quantization
Elisa Manrique Johannes Gutenberg University Mainz
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Microstates for BPS black holes and black rings
Thomas Levi University of Pennsylvania