Format results

Talk

Mathematical Physics Lecture (230505)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23050012 
Mathematical Physics Lecture (230503)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23050011 
Mathematical Physics Lecture (230501)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23050010 
Mathematical Physics Lecture (230421)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23040050 
Mathematical Physics Lecture (230419)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23040049 
Mathematical Physics Lecture (230404)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23040077 
Mathematical Physics Lecture (230417)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23040048 
Mathematical Physics Lecture (230414)
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23040047


Talk

Quantum Gravity Lecture (230504)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23050005 
Quantum Gravity Lecture (230502)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23050004 
Quantum Gravity Lecture (230501)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23050006 
Quantum Gravity Lecture (230427)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23040025 
Quantum Gravity Lecture (230425)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23040024 
Quantum Gravity Lecture (230424)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23040029 
Quantum Gravity Lecture (230420)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23040023 
Quantum Gravity Lecture (230418)
Aldo Riello Perimeter Institute for Theoretical Physics
PIRSA:23040022


Talk


Talk

Lecture 1: Introduction and Overview; Bootstrapping Ising mixed correlator

Ning Su Università di Pisa
 Aike Liu




Lecture 2: Bootstrapping global symmetries. Cutting surface algorithm
Ning Su Università di Pisa






Talk

Welcome and Opening Remarks
Elie Wolfe Perimeter Institute for Theoretical Physics

Tutorial 1
Robert Spekkens Perimeter Institute for Theoretical Physics

Graphical models: fundamentals, origins, and beyond
Steffen Lauritzen University of Copenhagen

Towards standard imsets for maximal ancestral graphs
Robin Evans University of Oxford


Correlations from joint measurements in boxworld and applications to information processing
Mirjam Weilenmann Institute for Quantum Optics and Quantum Information (IQOQI)  Vienna
PIRSA:23040107 
Observational Equivalences Between Causal Structures with Latent Variables
Marina Maciel Ansanelli Perimeter Institute for Theoretical Physics



Talk

Dark Matter and Particle Physics
Luna Zagorac Perimeter Institute for Theoretical Physics


Cosmology

Matthew Johnson York University

Jessica Muir Perimeter Institute for Theoretical Physics





Talk

Causal Inference Lecture  230412
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23040003 
Causal Inference Lecture  230405
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23040001 
Causal Inference Lecture  230403
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23040000 
Causal Inference Lecture  230329
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23030076 
Causal Inference Lecture  230322
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23030074 
Causal Inference Lecture  230320
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23030073 
Causal Inference Lecture  230315
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23030072 
Causal Inference Lecture  230313
Robert Spekkens Perimeter Institute for Theoretical Physics
PIRSA:23030071


Talk


Quantum Field Theory in Curved Spacetime (PM)  20230331
Sergey Sibiryakov McMaster University

Quantum Field Theory in Curved Spacetime (PM)  20230324
Sergey Sibiryakov McMaster University

Quantum Field Theory in Curved Spacetime (PM)  20230317
Sergey Sibiryakov McMaster University

Quantum Field Theory in Curved Spacetime (PM)  20230310
Sergey Sibiryakov McMaster University

Quantum Field Theory in Curved Spacetime (PM)  20230303
Sergey Sibiryakov McMaster University

Quantum Field Theory in Curved Spacetime (AM)  20230303
Sergey Sibiryakov McMaster University


Talk


Machine Learning Lecture  230328
Mohamed Hibat Allah Perimeter Institute for Theoretical Physics
PIRSA:23030036 
Machine Learning Lecture  230327

Joan Arrow University of Waterloo

Sarah Marsh City of Kitchener
PIRSA:23030041 

Machine Learning Lecture  230323
Lauren Hayward Perimeter Institute for Theoretical Physics
PIRSA:23030035 
Machine Learning Lecture  230321
Lauren Hayward Perimeter Institute for Theoretical Physics
PIRSA:23030034 
Machine Learning Lecture  230320
Lauren Hayward Perimeter Institute for Theoretical Physics
PIRSA:23030040 
Machine Learning Lecture  230314
Lauren Hayward Perimeter Institute for Theoretical Physics
PIRSA:23030032 
Machine Learning Lecture  230309
Lauren Hayward Perimeter Institute for Theoretical Physics
PIRSA:23030031


Talk

Quantum Information Lecture  230331
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030014 
Quantum Information Lecture  230329
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030013 
Quantum Information Lecture  230327
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030012 
Quantum Information Lecture  230324
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030011 
Quantum Information Lecture  230322
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030010 
Quantum Information Lecture  230320
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030009 
Quantum Information Lecture  230315
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030007 
Quantum Information Lecture  230313
Eduardo MartinMartinez Institute for Quantum Computing (IQC)
PIRSA:23030006


Talk

Strong Gravity Lecture  230330
William East Perimeter Institute for Theoretical Physics
PIRSA:23030050 
Strong Gravity Lecture  230328
William East Perimeter Institute for Theoretical Physics
PIRSA:23030049 
Strong Gravity Lecture  230327
William East Perimeter Institute for Theoretical Physics
PIRSA:23030054 
Strong Gravity Lecture  230323
William East Perimeter Institute for Theoretical Physics
PIRSA:23030048 
Strong Gravity Lecture  230321
William East Perimeter Institute for Theoretical Physics
PIRSA:23030047 
Strong Gravity Lecture  230320
William East Perimeter Institute for Theoretical Physics
PIRSA:23030053 
Strong Gravity Lecture  230316
William East Perimeter Institute for Theoretical Physics
PIRSA:23030046 
Strong Gravity Lecture  230314
William East Perimeter Institute for Theoretical Physics
PIRSA:23030045


Talk

Quantum Fields and Strings Lecture  230331
Davide Gaiotto Perimeter Institute for Theoretical Physics
PIRSA:23030028 
Quantum Fields and Strings Lecture  230329
Davide Gaiotto Perimeter Institute for Theoretical Physics
PIRSA:23030027 
Quantum Fields and Strings Lecture  230327
Davide Gaiotto Perimeter Institute for Theoretical Physics
PIRSA:23030026 
Quantum Fields and Strings Lecture  230324
Davide Gaiotto Perimeter Institute for Theoretical Physics
PIRSA:23030025 
Quantum Fields and Strings Lecture  230322
Davide Gaiotto Perimeter Institute for Theoretical Physics
PIRSA:23030024 
Quantum Fields and Strings Lecture  230320
Davide Gaiotto Perimeter Institute for Theoretical Physics
PIRSA:23030023 
Quantum Fields and Strings Lecture  230315
Jaume Gomis Perimeter Institute for Theoretical Physics
PIRSA:23030021 
Quantum Fields and Strings Lecture  230313
Jaume Gomis Perimeter Institute for Theoretical Physics
PIRSA:23030020


Mathematical Physics  Elective (2022/2023)
Title: An introduction to twistors Course Description: Twistor theory, introduced by Penrose many years ago, is a way to reformulate massless fields on fourdimensional spacetime in terms of an auxiliary 6dimensional complex manifold, called twistor space. This course will introduce twistor space and the Penrose correspondence (relating fields on twistor space and spacetime), at both classical and quantum levels. We will discuss the twistor realization of selfdual YangMills theory and of selfdual gravity. If time permits we will discuss the connection between twistors and celestial holography.

Quantum Gravity (2022/2023)
The main focus of this course is the exploration of the symmetry structure of General Relativity which is an essential step before any attempt at a (direct) quantization of GR. We will start by developing powerful tools for the analysis of local symmetries in physical theories (the covariant phase space method) and then apply it to increasingly complex theories: the parametrized particle, YangMills theory, and finally General Relativity. We will discover in which ways these theories have similar symmetry structures and in which ways GR is special. We will conclude by reviewing classical results on the uniqueness of GR given its symmetry structure and discuss why it is so hard to quantize it. In tutorials and homeworks, through the reading of articles and collegial discussions in the classroomas well as good old exercisesyou will explore questions such as "Should general relativity be quantized at all? Is a single graviton detactable (even in principle)?", "What is the meaning of the wave functions of the universe?", "Can we do physics without time?". 
Cosmology (2022/2023)
This class is an introduction to cosmology. We'll cover expansion history of the universe, thermal history, dark matter models, and as much cosmological perturbation theory as time permits. 
MiniCourse of Numerical Conformal Bootstrap
This school will be an advanced course on the numerical bootstrap. In the lectures, we will discuss advanced theoretical aspects of numerical bootstrap and algorithms. In the tutorials, we will demonstrate how to use simpleboot/hyperion and help the participants to run bootstrap computation on their own clusters. Main examples are 3D Ising, O(2), O(3), GrossNeveuYukawa CFTs.
The school will consist of one lecture in the morning and two tutorials in the afternoon (one tutorial for simpleboot (by Ning Su) and another one for hyperion (by Aike Liu).
Course materials, including tutorials, slides, and sample codes, can be found at https://gitlab.com/AikeLiu/BootstrapMiniCourse
This event is supported by the Simons Collaboration on The Nonperturbative Bootstrap (https://bootstrapcollaboration.com/).
Territorial Land Acknowledgement
Perimeter Institute acknowledges that it is situated on the traditional territory of the Anishinaabe, Haudenosaunee, and Neutral peoples.
Perimeter Institute is located on the Haldimand Tract. After the American Revolution, the tract was granted by the British to the Six Nations of the Grand River and the Mississaugas of the Credit First Nation as compensation for their role in the war and for the loss of their traditional lands in upstate New York. Of the 950,000 acres granted to the Haudenosaunee, less than 5 percent remains Six Nations land. Only 6,100 acres remain Mississaugas of the Credit land.
We thank the Anishinaabe, Haudenosaunee, and Neutral peoples for hosting us on their land.

Causal Inference & Quantum Foundations Workshop
Recently we have seen exciting results at the intersection of quantum foundations and the statistical analysis of causal hypotheses by virtue of the centrality of latent variable models to both fields.
In this workshop we will explore how academics from both sides can move the shared frontiers forward. Towards that end, we are including extensive breakout collaboration opportunities in addition to formal presentations. In order to make concrete progress on problems pertinent to both communities, we have selected the topic of causal models with restricted cardinality of the latent variables as a special focus for this workshop.
Sponsorship for this workshop has been provided by:
Territorial Land Acknowledgement
Perimeter Institute acknowledges that it is situated on the traditional territory of the Anishinaabe, Haudenosaunee, and Neutral peoples.
Perimeter Institute is located on the Haldimand Tract. After the American Revolution, the tract was granted by the British to the Six Nations of the Grand River and the Mississaugas of the Credit First Nation as compensation for their role in the war and for the loss of their traditional lands in upstate New York. Of the 950,000 acres granted to the Haudenosaunee, less than 5 percent remains Six Nations land. Only 6,100 acres remain Mississaugas of the Credit land.
We thank the Anishinaabe, Haudenosaunee, and Neutral peoples for hosting us on their land.


Causal Inference: Classical and Quantum
Can the effectiveness of a medical treatment be determined without the expense of a randomized controlled trial? Can the impact of a new policy be disentangled from other factors that happen to vary at the same time? Questions such as these are the purview of the field of causal inference, a generalpurpose science of cause and effect, applicable in domains ranging from epidemiology to economics. Researchers in this field seek in particular to find techniques for extracting causal conclusions from statistical data. Meanwhile, one of the most significant results in the foundations of quantum theory—Bell’s theorem—can also be understood as an attempt to disentangle correlation and causation. Recently, it has been recognized that Bell’s result is an early foray into the field of causal inference and that the insights derived from almost 60 years of research on his theorem can supplement and improve upon stateoftheart causal inference techniques. In the other direction, the conceptual framework developed by causal inference researchers provides a fruitful new perspective on what could possibly count as a satisfactory causal explanation of the quantum correlations observed in Bell experiments. Efforts to elaborate upon these connections have led to an exciting flow of techniques and insights across the disciplinary divide. This course will explore what is happening at the intersection of these two fields. zoom link: https://pitp.zoom.us/j/94143784665?pwd=VFJpajVIMEtvYmRabFYzYnNRSVAvZz09

Quantum Field Theory in Curved Spacetime
The course is an introduction to quantum field theory in curved spacetime. Upon building up the general formalism, the latter is applied to several topics in the modern theory of gravity and cosmology where the quantum properties of fundamental fields play an essential role.
Topics to be covered:
1) Radiation of particles by moving mirrors
2) Hawking radiation of black holes
3) Production of primordial density perturbations and gravity waves during inflation
4) Statistical properties of the primordial spectra
Required prior knowledge:
Foundations of quantum mechanics and general relativity 
Machine Learning for ManyBody Physics (2022/2023)
This course is designed to introduce machine learning techniques for studying classical and quantum manybody problems encountered in quantum matter, quantum information, and related fields of physics. Lectures will emphasize relationships between statistical physics and machine learning. Tutorials and homework assignments will focus on developing programming skills for machine learning using Python.

Quantum Information (2022/2023)
We will review the notion of information in the most possible general sense. Then we will revisit our definitions of entropy in quantum physics from an informational point of view and how it relates to information theory and thermodynamics. We will discuss entanglement in quantum mechanics from the point of view of information theory, and how to quantify it and distinguish it from classical correlations. We will derive Bell inequalities and discuss their importance, and how quantum information protocols can use entanglement as a resource. We will introduce other notions of quantum correlations besides entanglement and what distinguishes them from classical correlations. We will also analyze measurement theory in quantum mechanics, the notion of generalized measurements and their importance in the processing and transmission of information. We will introduce the notions of quantum circuits and see some of the most famous algorithms in quantum information processing, as well as in quantum cryptography. We will end with a little introduction to the notions of relativistic quantum information and a discussion about quantum ethics.

Strong Gravity (2022/2023)
This course will introduce some advanced topics in general relativity related to describing gravity in the strong field and dynamical regime. Topics covered include properties of spinning black holes, black hole thermodynamics and energy extraction, how to define horizons in a dynamical setting, formulations of the Einstein equations as constraint and evolution equations, and gravitational waves and how they are sourced. 
Quantum Fields and Strings (2022/2023)
This survey course introduces three advanced topics in quantum fields and strings: anomalies, conformal field theory, and string theory.