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

15 talksCollection Number C17010
Talk

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 1
Maïté Dupuis Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 2
Maïté Dupuis Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 3
Maïté Dupuis Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 4
Maïté Dupuis Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 5
Maïté Dupuis Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 6
Maïté Dupuis Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 7
Maïté Dupuis Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity  Lecture 8
Maïté Dupuis Perimeter Institute for Theoretical Physics


Infrared Problems in QED and Quantum Gravity
Collection Number C16048 
It from Qubit Summer School
62 talksCollection Number C16003Talk


Gravity Basics  1
Veronika Hubeny University of California, Davis

QI Basics  1
Patrick Hayden Stanford University

Entanglement  1
Robert Spekkens Perimeter Institute for Theoretical Physics

GR: Actions and Equations
David Kubiznak Charles University

A new perspective on holographic entanglement
Matthew Headrick Brandeis University

Bell’s Theorem
Adrian Kent University of Cambridge

QI Basics  2
John Watrous IBM (Canada)


Time in Cosmology
14 talksCollection Number C16016Talk

Welcome and Opening Remarks

Marina Cortes Institute for Astrophysics and Space Sciences

Lee Smolin Perimeter Institute for Theoretical Physics

Neil Turok University of Edinburgh



The origin of arrows of time II

Sean Carroll California Institute of Technology (Caltech)  Division of Physics Mathematics & Astronomy

Marina Cortes Institute for Astrophysics and Space Sciences

Tim Koslowski Universidad Nacional Autónoma De Mexico (UNAM)


The origin of arrows of time II cont.

Sean Carroll California Institute of Technology (Caltech)  Division of Physics Mathematics & Astronomy

Marina Cortes Institute for Astrophysics and Space Sciences

Tim Koslowski Universidad Nacional Autónoma De Mexico (UNAM)


Testing time asymmetry in the early universe

Brian Keating University of California, San Diego

Andrew Liddle University of Lisbon

Richard Muller University of California, Berkeley


The fate of the big bang

Abhay Ashtekar Pennsylvania State University

Neil Turok University of Edinburgh


Time as Organization – Downward Caustation, Structure and Complexity I
Barbara Drossel Technische Universität Darmstadt

Time as Organization – Downward Caustation, Structure and Complexity II

Stuart Kauffman Santa Fe Institute

George Ellis University of Cape Town



Quantum Information in Quantum Gravity II
31 talksCollection Number C15041Talk

Gravity Dual of Quantum Information Metric
Tadashi Takayanagi Yukawa Institute for Theoretical Physics

A new perspective on holographic entanglement
Matthew Headrick Brandeis University

Universal holographic description of CFT entanglement entropy
Thomas Faulkner University of Illinois UrbanaChampaign

Geometric Constructs in AdS/CFT
Veronika Hubeny University of California, Davis

Do black holes create polyamory
Jonathan Oppenheim University College London

Tensor Network Renormalization and the MERA
Glen Evenbly Georgia Institute of Technology

Entanglement renormalization for quantum fields
Jutho Haegeman Ghent University

Holographic quantum errorcorrecting codes: Toy models for the bulk/boundary correspondence
Fernando Pastawski California Institute of Technology


Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics


Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

PSI 2016/2017  Explorations in Quantum Gravity (Dupuis)
15 talksCollection 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



Quantum Information in Quantum Gravity II
31 talksCollection Number C15041Quantum Information in Quantum Gravity II 
Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

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 momentumdependent graviton correlation functions, the structure of the Standard Model with asymptotically safe gravity, and the recent first computation directly in spacetimes 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.


Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics

Quantum Gravity Lecture
Aldo Riello Perimeter Institute for Theoretical Physics