Format results
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Talk
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Analogies between QFT and lattice systems
Anton Kapustin California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Models of anyons with symmetry: a bulk-boundary correspondence
Fiona Burnell University of Minnesota
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Twisted Tools for (Untwisted) Quantum Field Theory
Justin Kulp Stony Brook University
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Quantum double models and Dijkgraaf-Witten theory with defects
Catherine Meusburger -
Topological sectors in quantum lattice models
Clement Delcamp Institut des Hautes Etudes Scientifiques (IHES)
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Douglas-Reutter 4d TQFT as a generalised orbifold
Vincentas Mulevičius Vilnius University
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Weak Hopf symmetric tensor networks
Andras Molnar University of Vienna
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Talk
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Opening Remarks
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Katie Mack Perimeter Institute
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Aaron Vincent Queen's University
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Dark and visible structures with dissipative dark matter
Sarah Shandera Pennsylvania State University
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The First Stars in the Universe as Dark Matter Laboratories
Cosmin Ilie Colgate University
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Probing Atomic Dark Matter using Simulated Galactic Subhalo Populations
Caleb Gemmell University of Toronto
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Dark matter at high redshifts with JWST
Julian Munoz The University of Texas at Austin
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(Dark) Baryogenesis through Asymmetric Reheating in the Mirror Twin Higgs.
Andrija Rasovic University of Toronto
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Talk
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Lessons of the Effective Field Theory Treatment of General Relativity
John Donoghue University of Massachusetts Amherst
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Positivity Bounds and Effective Fields Theories (A Review)
Andrew Tolley Imperial College London
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Holography and its implications for quantum gravity - VIRTUAL
Johanna Erdmenger University of Würzburg
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A hike through the Swamp
Miguel Mlontero IFT Madrid
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Piecing Together a Flat Hologram
Sabrina Pasterski Perimeter Institute for Theoretical Physics
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Open Discussion with today's speakers (Donoghue, Erdmenger, Montero, Pasterski, Tolley)
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John Donoghue University of Massachusetts Amherst
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Johanna Erdmenger University of Würzburg
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Miguel Mlontero IFT Madrid
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Sabrina Pasterski Perimeter Institute for Theoretical Physics
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Andrew Tolley Imperial College London
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Panel Discussion - Strengths and limitations of EFT (Donoghue, Knorr, Montero, Quevedo, Tolley)
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John Donoghue University of Massachusetts Amherst
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Miguel Mlontero IFT Madrid
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Fernando Quevedo University of Cambridge
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Carlo Rovelli Centre de Physique Théorique
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Andrew Tolley Imperial College London
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Status, perspective and three challenges in the asymptotic-safety paradigm for quantum gravity - VIRTUAL
Astrid Eichhorn University of Southern Denmark
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Talk
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QPV: An Overview and Reflections
Harry Buhrman Centrum Wiskunde & Informatica
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Popescu-Rohrlich correlations imply efficient instantaneous nonlocal quantum computation
Anne Broadbent University of Ottawa
PIRSA:23090023 -
Non-local quantum computation meets quantum gravity
Alex May Perimeter Institute
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Quantum Error-Correction and Holographic Task
Beni Yoshida Perimeter Institute for Theoretical Physics
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Protocols and Implementations of Quantum Position Verification
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Eric Chitambar University of Illinois Urbana-Champaign
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Paul Kwiat University of Illinois
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Talk
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Extended Wigner's Friend Inequalities are Nonclassical Causal Compatibility Inequalities
Marina Maciel AnsanelliPIRSA:23090058
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Talk
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Talk 44 - Large N von Neumann Algebras and the renormalization of Newton's constant
Elliott Gesteau California Institute of Technology (Caltech)
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Talk 88 - Type II_1 algebras for local subregions in quantum gravity
Antony Speranza University of Illinois Urbana-Champaign
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Talk 124 - von Neumann algebras in JT gravity with matter
David Kolchmeyer Massachusetts Institute of Technology
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Talk 61 - Horizons are Watching You
Gautam Satishchandran -
An SYK model with a scaling similarity.
Juan Maldacena Institute for Advanced Study (IAS) - School of Natural Sciences (SNS)
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Petz recovery from subsystems in conformal field theory
Shreya Vardhan Stanford University
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Causalworlds
Understanding causality is fundamental to science and inspires wide-ranging applications, yet there are several distinct notions of causation. Recently, there have been important developments on the role of causality in quantum physics, relativistic physics and their interplay. These have unearthed a plethora of fascinating open questions regarding the nature of causation, emergence of space-time structure and the limits of quantum information processing. At the same time, causal reasoning has become an important tool in machine learning and statistics, with applications ranging from big data to healthcare. This conference brings together experts from different areas of physics working on questions related to causality, as well as selected researchers who bridge the gap between fundamental research and current industrial applications. The aim of the conference is to provide a venue for cross-pollination of these ideas through scientific exchange between these communities. The conference will focus on the following facets of causality:
• Quantum and classical causal inference
• Indefinite causal order and quantum reference frames
• Causality in quantum field theory and quantum gravity
• Experiments and applications of causality
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Prospective speakers can submit a paper for a contributed talk and/or a poster via the Call for Abstracts. The Call for Abstracts is now open! Submissions for a talk will automatically be considered for a poster if not accepted for a talk.
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Scientific Organizers:
Hlér Kristjánsson (Perimeter Institute & IQC)
V Vilasini (ETH Zürich & INRIA Grenoble)
Robert Spekkens (Perimeter Institute)
Lucien Hardy (Perimeter Institute)
Elie Wolfe (Perimeter Institute)
Jacopo Surace (Perimeter Institute)
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Celestial Holography Summer School 2024
Perimeter Institute is excited to host the inaugural summer school for the Simons Collaboration on Celestial Holography July 22-26 in Waterloo, ON. The program will feature lectures on background material relevant for graduate students and postdocs interested in this emerging subfield, paired with vision talks on exciting future research directions.
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50 Years of Horndeski Gravity: Exploring Modified Gravity
Recent years have seen a flood of new data, from gravitational wave observations of merging black holes and neutron stars to precision probes of cosmology, which allow for unprecedented tests of our understanding of gravity. Going hand-in-hand with this, there has been significant recent progress on the theoretical side in terms of formulating modified theories of gravity, and using them to make detailed predictions, including in the nonlinear and dynamical regime, which can be confronted with the observations.
We are excited to announce a landmark conference that plans to delve into the forefront of research on modified theories of gravity and brings together leading experts from different disciplines including observational astrophysicists, numerical relativists, cosmologists and mathematical physicists to explore the present status of modified theories of gravity and envision their future theoretical development and implications for observations.
This conference is also timed to coincide with the 50th anniversary of pioneering work in this area carried out by Gregory Horndeski in the Waterloo Mathematical Physics Community. Hosted jointly by Perimeter Institute and the University of Waterloo, this conference will serve as a forum for researchers from different disciplines to exchange ideas at the cutting
edge of gravitational physics.
Presented by:
Sponsored in part by Gravity Theory Trust
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• Modified Gravity Theories: Theoretical Framework and Models
• Tests of modified Gravity with Gravitational Waves (LIGO/LISA/PTA)
• Astrophysical/cosmological tests of gravity
• Mathematical structure of Modified gravity
• Observational tests of quantum gravity
• Modified gravity in the early universeConference Structure:
The conference will feature a balanced blend of plenary sessions (invited Speakers), contributed talks, panel discussions and poster presentations for students.
• Keynote presentations by renowned physicists in the field, discussing the impact of Horndeski theories and other modified theories of gravity on cosmology, dark energy, and black hole physics.
• Contributed talks: prioritizing early-career researchers
• Panel discussions on emerging research directions, unresolved questions, and potential applications of Horndeski theories.
• Poster sessions for early-career researchers and graduate students to showcase their work and receive feedback from senior scientists.:: :: ::
Scientific Organizers:
- Ghazal Geshnizjani (Perimeter Institute, SOC Chair)
- William East (Perimeter Institute)
- Levon Pogosian (Simon Fraser University, Perimeter Institute Affiliate)
- Niayesh Afshordi (Perimeter Institute, U Waterloo, LOC Chair)
- Will Percival (Perimeter Institute, U Waterloo)
- Florian Girelli (U Waterloo, Perimeter Institute Affiliate)
- Jerome Quintin (U Waterloo, Perimeter Institute)
- Alex Krolewski (U Waterloo, Perimeter Institute, CITA)
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PSI 15th Anniversary Reunion
PSIons celebrate 15 years of Perimeter Scholars International with the first ever PSI reunion event!
Join us for 3 days that include:
- 3 former PSI Keynote Speakers in Industry
- 3 former PSI Speakers in Academia
- A chance to win 1 of 7 Grants of up to 5000 CAD each for a PSI class project to be developed and presented at the reunion (see Call for Projects for details)
- Social events with your cohorts and PSI special guests
- Lots of time to connect with classmates and PSIons, while immersing yourself in Perimeter’s lively research and collaboration environment.
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The Perimeter Scholars International (PSI) Master's program is offered in collaboration by Perimeter Institute and the University of Waterloo.
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Physics of Quantum Information
The dialogue between quantum information and quantum matter has fostered notable progress in both fields. Quantum information science has revolutionized our understanding of the structure of quantum many-body systems and novel forms of out-of-equilibrium quantum dynamics. The advances of quantum matter have provided novel paradigms and platforms for quantum information processing.
This conference aims to bring together leading experts at the intersections of quantum information and quantum matter. Key topics include: (i) quantum error correction, (ii) quantum dynamics, and (iii) quantum simulation.Organizers:
Timothy Hsieh, Perimeter Institute
Beni Yoshida, Perimeter Institute
Zhi Li, Perimeter Institute
Tsung-Cheng Lu, Perimeter Institute
Meenu Kumari, National Research Council Canada:: :: ::
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Foundations of Quantum Computational Advantage
The workshop marks the halfway point of the similarly named (FoQaCiA, pronounced "focaccia") collaboration between researchers in Canada and Europe, funded as part of a flagship partnership between NSERC and Horizon Europe.
https://www.foqacia.org/
The goal of FoQaCiA is to develop new foundational approaches to shed light on the relative computational power of quantum devices and classical computers, helping to find the "line in the sand" separating tasks admitting a quantum speedup from those that are classically simulable.
The workshop will focus on the four central interrelated themes of the project:
1. Quantum contextuality, non-classicality, and quantum advantage
2. The complexity of classical simulation of quantum computation
3. The arithmetic of quantum circuits
4. The efficiency of fault-tolerant quantum computation
Our view is that the future success of quantum computing critically depends on advances at the most fundamental level, and that large-scale investments in quantum implementations will only pay off if they can draw on additional foundational insights and ideas.:: :: ::
Scientific Organizers:
Rui Soares Barbosa (INL - International Iberian Nanotechnology Laboratory)
Anne Broadbent (University of Ottawa)
Ernesto Galvão (INL - International Iberian Nanotechnology Laboratory)
Rob Spekkens (Perimeter Institute)
Jon Yard (Perimeter Institute):: :: ::
FoQaCiA is funded by:
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Higher Categorical Tools for Quantum Phases of Matter
Quantum phases have become a staple of modern physics, thanks to their appearance in fields as diverse as condensed matter physics, quantum field theory, quantum information processing, and topology. The description of quantum phases of matter requires novel mathematical tools that lie beyond the old symmetry breaking perspective on phases. Techniques from topological field theory, homotopy theory, and (higher) category theory show great potential for advancing our understanding of the characterization and classification of quantum phases. The goal of this workshop is to bring together experts from across mathematics and physics to discuss recent breakthroughs in these mathematical tools and their application to physical problems.
Scientific Organizers
Lukas Mueller
Alex Turzillo
Davide Gaiotto
Sponsored in part by the Simons Collaboration on Global Categorical Symmetries
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Dark Matter, First Light
New observational programs and techniques are opening a window to the first galaxies in the universe and bringing surprises along the way. In this workshop, we'll explore how dark matter phenomenology may have impacted the first stars and galaxies, focusing on how improved modeling and simulations can allow us to use new and upcoming high-redshift data to gain insight into dark matter's fundamental nature.
Sponsored in part by:
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Puzzles in the Quantum Gravity Landscape: viewpoints from different approaches
Unraveling the quantum nature of gravity is one of the most pressing problems of theoretical physics. Several ideas have been put forward and resulted in a number of theories of quantum gravity. While these theories have explored different facets of the “quantum gravity landscape”, all viable approaches should ultimately make contact with observations, and answer exciting questions in cosmology and black-hole physics.
Sharing knowledge, exchanging ideas, and building a dictionary between different theories are crucial steps toward answering these questions, efficiently contrasting different theories, and ultimately reaching a deeper understanding of our Universe.
This conference will contribute to these goals by bringing together leading experts in different approaches to quantum gravity, gravitational effective field theory, black-hole physics, and cosmology. We will focus on specific puzzles in quantum gravity and their resolutions within different approaches. The conference will be highly interactive, with plenty of time to discuss common problems, understand the big picture, and develop novel connections between fields.Registration: Registration is now open, and both in-person and virtual participation is welcome. Online participants will be able to interact on an equal footing in question sessions and discussions. In-person attendance is limited and will be approved on a first-come, first-served basis. Talks are by invitation only, but in-person participants are encouraged to apply to present a poster.
Spam warning: There is an increasing number of scam agencies reaching out to conference speakers and attendees. Perimeter Institute does not use third-party agencies. We advise speakers and attendees to ignore emails and not to provide any details to anyone who is not from Perimeter Institute.
Confirmed Speakers and Panelists:
- Abhay Ashtekar (Penn State University)
- Robert Brandenberger (McGill University)
- Luca Buoninfante (Nordita)
- Xavier Calmet (University of Sussex)
- Francesco di Filippo (Kyoto University)
- Bianca Dittrich (Perimeter Institute)
- John Donoghue (University of Massachusetts)
- Astrid Eichhorn (CP3-origins)
- Johanna Erdmenger (Würzburg University)
- Ghazal Geshnizjani (Perimeter Institute)
- Ruth Gregory (King's College)
- Lavinia Heisenberg (Heidelberg University)
- Bob Holdom (University of Toronto)
- Benjamin Knorr (Nordita)
- Renate Loll (Radboud University Nijmegen)
- Miguel Montero (IFT Madrid)
- Rob Myers (Perimeter Institute)
- Sabrina Pasterski (Perimeter Institute)
- Fernando Quevedo (Cambridge University)
- Lisa Randall (Harvard University)
- Kasia Rejzner (York University)
- Mairi Sakellariadou (King's College)
- Lee Smolin (Perimeter Institute)
- Kellogg Stelle (Imperial College)
- Sumati Surya (Raman Research Institute)
- Andrew Tolley (Imperial College)
- Neil Turok (University of Edinburgh)
- Pedro Vieira (Perimeter Institute)
- Yasaman Yazdi (Imperial College)
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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QPV 2023: Advances in quantum position verification
Quantum position verification (QPV) schemes use the properties of quantum information and the relativistic signalling bound to verify the location of an object (sometimes called a “tag”) to distant observers in an environment that may contain would-be spoofers. The guarantee is based on the assumptions of the underlying security model; various theoretically and practically interesting security models have been proposed. The area is attracting increasing interest, with new theoretical developments in security analyses, emerging experimental studies of QPV systems, and recently discovered surprising and intriguing connections to topics in quantum gravity. A workshop on QPV will be held at the Perimeter Institute for Theoretical Physics.
The workshop will cover topics related to all aspects of QPV, including, but not limited to:
- Theoretical developments related to the security of QPV schemes, including development or refinement of security models, proofs of security within given models, tradeoffs between security and efficiency, and Experimental studies of QPV and theoretical work aimed at developing practical QPV schemes.
- QPV’s relationship to other cryptographic tasks and primitives.
- QPV’s relationship to holography and quantum gravity.
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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Perimeter Institute Graduate Students’ Conference 2023
The annual Graduate Students’ Conference showcases the diverse research directions at Perimeter Institute, both organized and presented by the students. Our graduate students are invited to share their best work with their fellow PhD students, PSI students and other PI residents interested in hearing about physics research and discussing it in a lively atmosphere full of questions.
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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It from Qubit 2023
The final meeting of It from Qubit: Simons Collaboration on Quantum Fields, Gravity, and Information will be devoted to recent developments at the interface of fundamental physics and quantum information theory, spanning topics such as
- chaos and thermalization in many-body systems and their realization in quantum gravity;
- information-theoretic constraints on quantum field theories and their RG flows and symmetries;
- gravitational wormholes and their information-theoretic implications;
- calculable lower-dimensional models of quantum gravity; the entanglement structure of semi-classical states in quantum gravity;
- quantum error-correcting codes in quantum field theory and quantum gravity;
- complexity in field theory and gravity;
- the black-hole information puzzle;
- quantum simulation of quantum field theories and quantum gravity.
Recorded talks: https://pirsa.org/C23021
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.