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Talk
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Welcome and Opening Remarks
Elie Wolfe Perimeter Institute for Theoretical Physics
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Tutorial 1
Robert Spekkens Perimeter Institute for Theoretical Physics
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Graphical models: fundamentals, origins, and beyond
Steffen Lauritzen University of Copenhagen
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Towards standard imsets for maximal ancestral graphs
Robin Evans University of Oxford
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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
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Talk
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Dark Matter and Particle Physics
Luna Zagorac Perimeter Institute for Theoretical Physics
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Cosmology
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Matthew Johnson York University
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Jessica Muir Perimeter Institute for Theoretical Physics
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Talk
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Quantum Matter Lecture (230505)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23050003 -
Quantum Matter Lecture (230428)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23040017 -
Quantum Matter Lecture (230426)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23040016 -
Quantum Matter Lecture (230424)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23040015 -
Quantum Matter Lecture (230421)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23040014 -
Quantum Matter Lecture (230419)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23040013 -
Quantum Matter Lecture (230417)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23040012 -
Quantum Matter Lecture (230414)
Baskaran Ganapathy Institute of Mathematical Sciences
PIRSA:23040011
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Talk
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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
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Talk
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Talk
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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
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Talk
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Talk
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Talk
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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
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Talk
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Quantum Field Theory in Curved Spacetime (PM) - 2023-03-31
Sergey Sibiryakov McMaster University
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Quantum Field Theory in Curved Spacetime (PM) - 2023-03-24
Sergey Sibiryakov McMaster University
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Quantum Field Theory in Curved Spacetime (PM) - 2023-03-17
Sergey Sibiryakov McMaster University
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Quantum Field Theory in Curved Spacetime (PM) - 2023-03-10
Sergey Sibiryakov McMaster University
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Quantum Field Theory in Curved Spacetime (PM) - 2023-03-03
Sergey Sibiryakov McMaster University
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Quantum Field Theory in Curved Spacetime (AM) - 2023-03-03
Sergey Sibiryakov McMaster University
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Talk
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Quantum Information Lecture - 230331
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030014 -
Quantum Information Lecture - 230329
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030013 -
Quantum Information Lecture - 230327
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030012 -
Quantum Information Lecture - 230324
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030011 -
Quantum Information Lecture - 230322
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030010 -
Quantum Information Lecture - 230320
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030009 -
Quantum Information Lecture - 230315
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030007 -
Quantum Information Lecture - 230313
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
PIRSA:23030006
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Talk
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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
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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.
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Quantum Matter (2022/2023)
Matter is quantum. Growing experimental results on materials, natural and synthetic (ion traps, cold atoms etc.,) and concomitant theoretical developments make `quantum matter' an exciting field. There is also a growing interplay of quantum matter physics and quantum information/computation. With a focus on concepts I plan to discuss key phenomenology, quantum models and theory. -
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, Yang--Mills 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 classroom---as well as good old exercises---you 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?". -
AdS/CFT (2022/2023)
We will cover the basics of the gauge/gravity duality, including some of the following aspects: holographic fluids, applications to condensed matter systems, entanglement entropy, and recent advances in understanding the black hole information paradox. -
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 four-dimensional space-time in terms of an auxiliary 6-dimensional complex manifold, called twistor space. This course will introduce twistor space and the Penrose correspondence (relating fields on twistor space and space-time), at both classical and quantum levels. We will discuss the twistor realization of self-dual Yang-Mills theory and of self-dual gravity. If time permits we will discuss the connection between twistors and celestial holography.
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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. -
Mini introductory course on topological orders and topological quantum computing
In this mini course, I shall introduce the basic concepts in 2D topological orders by studying simple models of topological orders and then introduce topological quantum computing based on Fibonacci anyons. Here is the (not perfectly ordered) syllabus.
- Overview of topological phases of matter
- Z2 toric code model: the simplest model of 2D topological orders
- Quick generalization to the quantum double model
- Anyons, topological entanglement entropy, S and T matrices
- Fusion and braiding of anyons: quantum dimensions, pentagon and hexagon identities
- Fibonacci anyons
- Topological quantum computing
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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 general-purpose 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 state-of-the-art 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
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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 -
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.
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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.