Format results

13 talksCollection Number C23005
Talk

Numerical Methods (2022/2023)
12 talksCollection Number C23003Talk

Numerical Methods Lecture  230110
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010002 
Numerical Methods Lecture  230111
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010009 
Numerical Methods Lecture  230112
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010003 
Numerical Methods Lecture  230117
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010004 
Numerical Methods Lecture  230119
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010005 
Numerical Methods Lecture  230120
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010011 
Numerical Methods Lecture  230124
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010006 
Numerical Methods Lecture  230126
Erik Schnetter Perimeter Institute for Theoretical Physics
PIRSA:23010007


Gravitational Physics (2022/2023)
14 talksCollection Number C23006Talk

Mathematical Physics (2022/2023)
12 talksCollection Number C23004Talk

Mathematical Physics Lecture  230110
Giuseppe Sellaroli Perimeter Institute for Theoretical Physics
PIRSA:23010012 
Mathematical Physics Lecture  230112
Giuseppe Sellaroli Perimeter Institute for Theoretical Physics
PIRSA:23010013 
Mathematical Physics Lecture  230113
Giuseppe Sellaroli Perimeter Institute for Theoretical Physics
PIRSA:23010019 
Mathematical Physics Lecture  230117
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23010014 
Mathematical Physics Lecture  230118
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23010022 
Mathematical Physics Lecture  230119
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23010015 
Mathematical Physics Lecture  230124
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23010016 
Mathematical Physics Lecture  230126
Kevin Costello Perimeter Institute for Theoretical Physics
PIRSA:23010017


Quantum Foundations (2022/2023)
13 talksCollection Number C23007Talk

Quantum Foundations Lecture  230109
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010046 
Quantum Foundations Lecture  230111
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010047 
Quantum Foundations Lecture  230116
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010049 
Quantum Foundations Lecture  230118
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010050 
Quantum Foundations Lecture  230119
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010048 
Quantum Foundations Lecture  230120
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010051 
Quantum Foundations Lecture  230123
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010052 
Quantum Foundations Lecture  230125
Lucien Hardy Perimeter Institute for Theoretical Physics
PIRSA:23010053


Symmetries Graduate School 2023
17 talksCollection Number C23008Talk



Fitting models to data using Markov Chain Monte Carlo
Dustin Lang Perimeter Institute for Theoretical Physics
PIRSA:23010076 



Topological quantum matter and quantum computing
TsungCheng Lu (Peter) Perimeter Institute for Theoretical Physics
PIRSA:23010084 
Topological quantum matter and quantum computing
TsungCheng Lu (Peter) Perimeter Institute for Theoretical Physics
PIRSA:23010086


Quantum Field Theory II (2022/2023)
14 talksCollection Number C22037Talk



Quantum Field Theory II  Lecture 221118
PIRSA:22110006 
Quantum Field Theory II  Lecture 221121
PIRSA:22110007 
Quantum Field Theory II  Lecture 221123
PIRSA:22110008 
Quantum Field Theory II  Lecture 221125
PIRSA:22110009 
Quantum Field Theory II  Lecture 221128
PIRSA:22110010 
Quantum Field Theory II  Lecture 221130
PIRSA:22110011


Statistical Physics (2022/2023)
14 talksCollection Number C22038Talk

Statistical Physics  Lecture 221115
PIRSA:22110012 
Statistical Physics  Lecture 221116
PIRSA:22110013 
Statistical Physics  Lecture 221118
PIRSA:22110014 
Statistical Physics  Lecture 221121
PIRSA:22110015 
Statistical Physics  Lecture 221123
PIRSA:22110016 
Statistical Physics  Lecture 221125
PIRSA:22110017 
Statistical Physics  Lecture 221128
PIRSA:22110018 
Statistical Physics  Lecture 221130
PIRSA:22110019


Special Topics in Physics  QFT2: Quantum Electrodynamics (Cliff Burgess)
12 talksCollection Number C22043Talk


QFT2  Quantum Electrodynamics  Afternoon Lecture
Cliff Burgess McMaster University


QFT2  Quantum Electrodynamics  Afternoon Lecture
Cliff Burgess McMaster University


QFT2  Quantum Electrodynamics  Afternoon Lecture
Cliff Burgess McMaster University


QFT2  Quantum Electrodynamics  Afternoon Lecture
Cliff Burgess McMaster University


New Frontiers in Machine Learning and Quantum
10 talksCollection Number C22034Talk

Quantum adiabatic speedup on a class of combinatorial optimization problems

Madelyn Cain Harvard University
 Madelyn Cain


Towards an artificial Muse for new ideas in Quantum Physics
Mario Krenn Max Planck Institute for the Science of Light


SelfCorrecting Quantum ManyBody Control using Reinforcement Learning with Tensor Networks
Friederike Metz L'Ecole Polytechnique Federale de Lausanne (EPFL)

A Study of Neural Network Field Theories
Anindita Maiti Perimeter Institute for Theoretical Physics


Representing quantum states with spiking neural networks

Stefanie Czischek University of Ottawa
 Stefanie Czischek


Adaptive Quantum State Tomography with Active Learning
Hannah Lange LudwigMaximiliansUniversitiät München (LMU)


Quantum Matter Workshop
15 talksCollection Number C22033Talk


Topological superconductivity in twisted doublelayer highTc cuprates: Theory and experimental signatures
Marcel Franz University of British Columbia

Stacking Induced Spontaneous Polarization in Rhombohedral MoS2
Ziliang Ye University of British Columbia


Z2 spin liquids in spinS Kitaev honeycomb model via parton construction
Han Ma Perimeter Institute for Theoretical Physics


NonFermi liquids and quantum criticality in multipolar Kondo systems
YongBaek Kim University of Toronto



Quantum Field Theory I (2022/2023)
14 talksCollection Number C22036Talk

Quantum Field Theory I  Lecture 221011
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100048 
Quantum Field Theory I  Lecture 221012
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100049 
Quantum Field Theory I  Lecture 221014
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100050 
Quantum Field Theory I  Lecture 221017
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100051 
Quantum Field Theory I  Lecture 221018
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100052 
Quantum Field Theory I  Lecture 221021
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100053 
Quantum Field Theory I  Lecture 221024
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100054 
Quantum Field Theory I  Lecture 221026
Gang Xu Perimeter Institute for Theoretical Physics
PIRSA:22100055


Standard Model (2022/2023)
13 talksCollection Number C23005Topics will include: Nonabelian gauge theory (aka YangMills theory), the Standard Model (SM) as a particular nonabelian gauge theory (its gauge symmetry, particle content, and Lagrangian, Yukawa couplings, CKM matrix, 3 generations), spontaneous symmetry breaking: global vs local symmetries (Goldstone's Theorem vs Higgs Mechanism; mass generation for bosons and fermions), neutrino sector (including righthanded neutrinos?), effective field theory, Feynman rules (Standard Model propagators and vertices), gauge and global anomalies, strong CP problem, renormalization group (beta functions, asymptotic freedom, quark confinement, mesons, baryons, Higgs instability, hierarchy problem), unexplained puzzles in the SM, and surprising/intriguing aspects of SM structure that hint at a deeper picture. 
Numerical Methods (2022/2023)
12 talksCollection Number C23003This course teaches basic numerical methods that are widely used across many fields of physics. The course is based on the Julia programming language. Topics include an introduction to Julia, linear algebra, Monte Carlo methods, differential equations, and are based on applications by researchers at Perimeter. The course will also teach principles of software engineering ensuring reproducible results. 
Gravitational Physics (2022/2023)
14 talksCollection Number C23006The main objective of this course is to discuss some advanced topics in gravitational physics and its applications to high energy physics. Necessary mathematical tools will be introduced on the way. These mathematical tools will include a review of differential geometry (tensors, forms, Lie derivative), vielbeins and Cartan’s formalism, hypersurfaces, GaussCodazzi formalism, and variational principles (EinsteinHilbert action & GibbonsHawking term). Several topics in black hole physics including the Kerr solution, black hole astrophysics, higherdimensional black holes, black hole thermodynamics, Euclidean action, and Hawking radiation will be covered. Additional advanced topics will include domain walls, brane world scenarios, KaluzaKlein theory and KK black holes, GregoryLaflamme instability, and gravitational instantons

Mathematical Physics (2022/2023)
12 talksCollection Number C23004This course will cover the mathematical structure underlying classical gauge theory. Previous knowledge of differential geometry is not required. Topics covered in the course include: introduction to manifolds, symplectic manifolds, introduction to Lie groups and Lie algebras; deformation quantisation and geometric quantisation; the matematical structure of field theories; scalar field theory; geometric picture of YangMills theory; symplectic reduction. If time permits, we may also look at the description of gauge theory in terms of principal bundles and the topological aspects of gauge theory. 
Quantum Foundations (2022/2023)
13 talksCollection Number C23007This course will cover the basics of Quantum Foundations under three main headings. Part I – Novel effects in Quantum Theory. A number of interesting quantum effects will be considered. (a) Interferometers: MachZehnder interferometer, ElitzurVaidman bomb tester, (b) The quantumZeno effect. (c) The no cloning theorem. (d) Quantum optics (single mode). HongOuMandel dip. Part II Conceptual and interpretational issues. (a) Axioms for quantum theory for pure states. (b) VonNeumann measurement model. * (c) The measurement (or reality) problem. (d) EPR Einstein’s 1927 remarks, the EinsteinPodolskyRosen argument. (e) Bell’s theorem, nonlocality without inequalities. The Tirolson bound. (f) The KochenSpecker theorem and related work by Spekkens (g) On the reality of the wavefunction: Epistemic versus ontic interpretations of the wavefunction and the PuseyBarrettRudolph theorem proving the reality of the wave function. (h) Gleason’s theorem. (i) Interpretations. The landscape of interpretations of quantum theory (the Harrigen Spekkens classification). The de BroglieBohm interpretation, the many worlds interpretation, wavefunction collapse models, the Copenhagen interpretation, and QBism. Part III Structural issues. (a) Reformulating quantum theory: I will look at some reformulations of quantum theory and consider the light they throw on the structure of quantum theory. These may include time symmetric quantum theory and weak measurements (Aharonov et al), quantum Bayesian networks, and the operator tensor formalism. (b) Generalised probability theories: These are more general frameworks for probabilistic theories which admit classical and quantum as special cases. (c) Reasonable principles for quantum theory: I will review some of the recent work on reconstructing quantum theory from simple principles. (d) Indefinite causal structure and indefinite causal order. Finally I will conclude by looking at (i) the close link between quantum foundations and quantum information and (ii) possible future directions in quantum gravity motivated by ideas from quantum foundations.

Symmetries Graduate School 2023
17 talksCollection Number C23008The goal of this Winter School on Symmetries is to introduce graduate students to the effectiveness of symmetry principles across subjects and energy scales.
From Noether’s celebrated theorem to the development of the standard model of particle physics, from Landau’s to Wilson’s classification of phases of matter and phase transitions, symmetries have been key to 20th century physics. But in the last decades novel and more subtle incarnations of the symmetry principle have shown us the way to unlocking new and unexpected phases of quantum matter, infrared and holographic properties of the quantum gravitational interaction, as well as to advancements in pure mathematics to mention a few.
The Graduate Winter School on Symmetries will introduce students and young researchers to a variety of applications of the symmetry principle. These will be chosen across contemporary research topics in both theoretical physics and mathematics. Our goal is to create a synergistic environment where ideas and techniques can ultimately spread across disciplines. This will be achieved through a combination of minicourses, colloquia, and discussion sessions led in collaboration with the students themselves.
https://pirsa.org/C23008
Territorial Land AcknowledgementPerimeter 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.

Quantum Field Theory II (2022/2023)
14 talksCollection Number C22037The course has three parts. In the first part of the course, the path integral formulation of nonrelativistic quantum mechanics and the functional integral formulation of quantum field theory are developed. The second part of the course covers renormalization and the renormalization group. Finally, nonabelian gauge theories are quantized using functional integral techniques.

Statistical Physics (2022/2023)
14 talksCollection Number C22038The course begins by discussing several topics in equilibrium statistical physics including phase transitions and the renormalization group. The second part of the course covers nonequilibrium statistical physics including kinetics of aggregation, spin dynamics, population dynamics, and complex networks.

Special Topics in Physics  QFT2: Quantum Electrodynamics (Cliff Burgess)
12 talksCollection Number C22043This course uses quantum electrodynamics (QED) as a vehicle for covering several more advanced topics within quantum field theory, and so is aimed at graduate students that already have had an introductory course on quantum field theory. Among the topics hoped to be covered are: gauge invariance for massless spin1 particles from special relativity and quantum mechanics; Ward identities; photon scattering and loops; UV and IR divergences and why they are handled differently; effective theories and the renormalization group; anomalies.

New Frontiers in Machine Learning and Quantum
10 talksCollection Number C22034This workshop will bring together a group of young trendsetters working at the frontier of machine learning and quantum information. The workshop will feature two days of talks, and ample time for participants to interact and form new collaborations in the inspiring environment of the Perimeter Institute. Topics will include machine learning, quantum field theory, quantum information, and unifying theoretical concepts.
Territorial Land AcknowledgementPerimeter 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.

Quantum Matter Workshop
15 talksCollection Number C22033The goal of this conference is for quantum matter researchers at Perimeter, University of British Columbia, and University of Toronto to share their recent work with each other, to facilitate discussion and collaboration.
Territorial Land AcknowledgementPerimeter 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.

Quantum Field Theory I (2022/2023)
14 talksCollection Number C22036The course starts by looking for a quantum theory that is compatible with special relativity, without assuming fields are fundamental. Nevertheless fields turn out to be a very good, maybe inevitable mathematical tool for formulating and studying such a relativistic quantum theory. The second part of the course introduces the Dirac theory and canonically quantizes it. It also quantizes the Maxwell field theory. The Feynman diagram technique for perturbation theory is developed and applied to the scattering of relativistic fermions and photons. Renormalization of quantum electrodynamics is done to oneloop order.
Prerequisite: PSI Quantum Theory course or equivalently Graduate level Quantum Mechanics and QFT of scalar theory