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.
Format results
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15 talks-Collection Number C17010
Talk
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 1
Maïté Dupuis Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 2
Maïté Dupuis Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 3
Maïté Dupuis Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 4
Maïté Dupuis Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 5
Maïté Dupuis Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 6
Maïté Dupuis Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 7
Maïté Dupuis Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 8
Maïté Dupuis Perimeter Institute for Theoretical Physics
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Infrared Problems in QED and Quantum Gravity
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It from Qubit Summer School
62 talks-Collection Number C16003Talk
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Gravity Basics - 1
Veronika Hubeny University of California, Davis
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QI Basics - 1
Patrick Hayden Stanford University
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Entanglement - 1
Robert Spekkens Perimeter Institute for Theoretical Physics
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A new perspective on holographic entanglement
Matthew Headrick Brandeis University
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Bell’s Theorem
Adrian Kent University of Cambridge
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GR: Actions and Equations
David Kubiznak Charles University
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QI Basics - 2
John Watrous IBM (Canada)
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Time in Cosmology
14 talks-Collection Number C16016Talk
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Welcome and Opening Remarks
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Marina Cortes Institute for Astrophysics and Space Sciences
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Lee Smolin Perimeter Institute for Theoretical Physics
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Neil Turok University of Edinburgh
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The origin of arrows of time II
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Universidad Nacional Autónoma De Mexico (UNAM)
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The origin of arrows of time II cont.
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Universidad Nacional Autónoma De Mexico (UNAM)
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Testing time asymmetry in the early universe
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Brian Keating University of California, San Diego
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Andrew Liddle University of Lisbon
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Richard Muller University of California, Berkeley
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The fate of the big bang
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Abhay Ashtekar Pennsylvania State University
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Neil Turok University of Edinburgh
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Time as Organization – Downward Caustation, Structure and Complexity I
Barbara Drossel Technische Universität Darmstadt
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Time as Organization – Downward Caustation, Structure and Complexity II
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Stuart Kauffman Santa Fe Institute
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George Ellis University of Cape Town
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Quantum Information in Quantum Gravity II
31 talks-Collection Number C15041Talk
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Gravity Dual of Quantum Information Metric
Tadashi Takayanagi Yukawa Institute for Theoretical Physics
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A new perspective on holographic entanglement
Matthew Headrick Brandeis University
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Universal holographic description of CFT entanglement entropy
Thomas Faulkner University of Illinois Urbana-Champaign
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Geometric Constructs in AdS/CFT
Veronika Hubeny University of California, Davis
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Do black holes create polyamory
Jonathan Oppenheim University College London
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Tensor Network Renormalization and the MERA
Glen Evenbly Georgia Institute of Technology
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Entanglement renormalization for quantum fields
Jutho Haegeman Ghent University
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Holographic quantum error-correcting codes: Toy models for the bulk/boundary correspondence
Fernando Pastawski California Institute of Technology
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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Embedding generalised LTB models in polymerised spherically symmetric models: formalism and applications
Kristina Giesel University of Erlangen-Nuremberg
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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PSI 2016/2017 - Explorations in Quantum Gravity (Dupuis)
15 talks-Collection Number C17010PSI 2016/2017 - Explorations in Quantum Gravity (Dupuis) -
Infrared Problems in QED and Quantum Gravity
-Collection Number C16048Infrared Problems in QED and Quantum Gravity
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Quantum Information in Quantum Gravity II
31 talks-Collection Number C15041Quantum Information in Quantum Gravity II -
Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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Embedding generalised LTB models in polymerised spherically symmetric models: formalism and applications
Kristina Giesel University of Erlangen-Nuremberg
At the classical level, one can restrict a spherically symmetric model to the corresponding LTB sector by requiring that a so-called LTB condition is satisfied. In this talk we will discuss how this can be generalised in the context of effective models containing quantum gravity inspired modifications of the classical theory in the form of polymerisations. The formalism presented allows us to consider more general polymerisations than in previous work in the literature. Applications of this framework are then considered, focusing on a particular class of models that have the property that the effective dynamics is completely decoupled along the radial direction. Examples of effective models that fall into this class are discussed and their physical properties are compared with existing models in the literature.
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics
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From fluctuating gravitons to Lorentzian quantum gravity
I will review recent progress in the asymptotic safety approach to quantum gravity. This includes the computation of momentum-dependent graviton correlation functions, the structure of the Standard Model with asymptotically safe gravity, and the recent first computation directly in space-times with Lorentzian signatures via the spectral function of the graviton. Overall, I will display the progress towards the computation of the quantum effective action which encapsulates effective field theory in the IR limit and the asymptotic safety regime in the UV limit.
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Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics