Quantum field theory was originally developed as the extension of quantum mechanics needed to accommodate the principles of special relativity. Today quantum field theory is the modern paradigm with which we understand particle physics, condensed matter systems, and many aspects of early universe cosmology, and it is used to describe the interactions of elementary particles, the dynamics of many body systems and critical phenomena, all with exquisite accuracy. Currently, Perimeter researchers are producing world-leading advances in the study of integrability and scattering amplitudes in quantum field theories. String theory is a theoretical framework which was proposed to produce a unified description of all particles and forces in nature, including gravity. It is based on the idea that at very short distances, all particles should in fact be seen to be extended one-dimensional objects, i.e., ‘strings.’ Modern string theory has grown to be a broad and varied field of research with strong connections to quantum gravity, particle physics and cosmology, as well as mathematics. An exciting new framework known as ‘holography’ has emerged from string theory whereby quantum gravity is formulated in terms of quantum field theory in one less dimension. This symbiosis between quantum field theory and quantum gravity has been a focus of many Perimeter researchers. This has led to the development of exciting new methods to study the quantum dynamics of gauge theories and in the application of these techniques to new domains, such as nuclear physics and condensed matter physics
Format results
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14 talks-Collection NumberC24035
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Lecture - QFT II, PHYS 603
CEA Saclay -
Lecture - QFT II, PHYS 603
CEA Saclay -
Lecture - QFT II, PHYS 603
CEA Saclay -
Lecture - QFT II, PHYS 603
CEA Saclay -
Lecture - QFT II, PHYS 603
CEA Saclay -
Lecture - QFT II, PHYS 603
CEA Saclay -
Lecture - QFT II, PHYS 603
CEA Saclay -
Lecture - QFT II, PHYS 603
CEA Saclay
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Quantum Field Theory I (Core), PHYS 601, October 7 - November 6, 2024
13 talks-Collection NumberC24034Talk
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Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics -
Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics -
Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics -
Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics -
Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics -
Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics -
Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics -
Lecture - QFT I, PHYS 601
Perimeter Institute for Theoretical Physics
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Beautiful Papers - October 7, 2024 - January 31, 2025
13 talks-Collection NumberC24043Talk
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Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics -
Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics -
Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics -
Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics -
Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics -
Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics -
Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics -
Lecture - Beautiful Papers
Perimeter Institute for Theoretical Physics
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Celestial Holography Summer School 2024
27 talks-Collection NumberC24028Talk
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Lecture - Celestial Holography Ia
PIRSA:24070002 -
Lecture - Canonical a
PIRSA:24070003 -
Lecture - Celestial Holography Ib
PIRSA:24070004 -
Lecture - Amplitudes a
PIRSA:24070005 -
Vision Talk
PIRSA:24070006 -
Lecture - Celestial Holography IIa
PIRSA:24070007 -
Lecture - Canonical b
PIRSA:24070008 -
Lecture - Celestial Holography IIb
PIRSA:24070009
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String Theory 2023/24
13 talks-Collection NumberC24025Talk
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String Theory Lecture
Perimeter Institute for Theoretical Physics -
String Theory Lecture
Perimeter Institute for Theoretical Physics -
String Theory Lecture
Perimeter Institute for Theoretical Physics -
String Theory Lecture
Perimeter Institute for Theoretical Physics -
String Theory Lecture
Perimeter Institute for Theoretical Physics -
String Theory Lecture
Perimeter Institute for Theoretical Physics -
String Theory Lecture
Perimeter Institute for Theoretical Physics -
String Theory Lecture
Perimeter Institute for Theoretical Physics
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QFT III 2023/24
13 talks-Collection NumberC24010Talk
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QFT III Lecture
Perimeter Institute for Theoretical Physics -
QFT III Lecture
Perimeter Institute for Theoretical Physics -
QFT III Lecture
Perimeter Institute for Theoretical Physics -
QFT III Lecture
Perimeter Institute for Theoretical Physics -
QFT III Lecture
Perimeter Institute for Theoretical Physics -
QFT III Lecture
Perimeter Institute for Theoretical Physics -
QFT III Lecture
Perimeter Institute for Theoretical Physics -
QFT III Lecture
Perimeter Institute for Theoretical Physics
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Quantum Field Theory 2 2023/24
14 talks-Collection NumberC23045Talk
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Twisted Holography Mini-Course
6 talks-Collection NumberC23050Talk
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Twisted Holography Mini-Course - Lecture 20231102
Perimeter Institute for Theoretical Physics -
Twisted Holography Mini-Course - Lecture 20231109
Perimeter Institute for Theoretical Physics -
Twisted Holography Mini-Course - Lecture 20231116
Perimeter Institute for Theoretical Physics -
Twisted Holography Mini-Course - Lecture 20231123
Perimeter Institute for Theoretical Physics -
Twisted Holography Mini-Course - Lecture 20231130
Perimeter Institute for Theoretical Physics -
Twisted Holography Mini-Course - Lecture 20231214
Perimeter Institute for Theoretical Physics
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Quantum Spectral Curve and Three Point Functions mini-course
5 talks-Collection NumberC23049Talk
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3pt function: No Q's
Perimeter Institute for Theoretical Physics -
Q-functions in spin chains. QSC for spin chains
King's College London -
QSC definition in N=4
King's College London -
An explicit solution
King's College London -
3pt functions: Yes Q's
Perimeter Institute for Theoretical Physics
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Quantum Field Theory 1 2023/24
13 talks-Collection NumberC23044Talk
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Strings 2023
30 talks-Collection NumberC23001Talk
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Opening Remarks
Perimeter Institute for Theoretical Physics -
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Research Talk 2 - Burns holography
Harvard University -
Research Talk 3 - Swampland and a Unification of the Dark Sector
Harvard University -
Research Talk 4 - A universal pattern at infinite field distance
Irene Valenzuela -
Challenge Talk 1 - The Cosmic Neutrino Background: Its distribution on the surface of the Earth and its manipulation on laboratory scales
Perimeter Institute for Theoretical Physics -
Research Talk 5 - Crossing beyond scattering amplitudes
Hofie Hannesdottir -
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Mini-Course of Numerical Conformal Bootstrap
15 talks-Collection NumberC23030Talk
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Lecture 1: Introduction and Overview; Bootstrapping Ising mixed correlator
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Università di Pisa
- Aike Liu
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Lecture 2: Bootstrapping global symmetries. Cutting surface algorithm
Università di Pisa -
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Quantum Field Theory II (Core), PHYS 603, November 12 - December 11, 2024
14 talks-Collection NumberC24035This course introduces the functional integral formalism, the renormalization group, and non-abelian gauge theory. Additional topics may be covered as time allows. Instructor: Francois David / Gang Xu Students who are not part of the PSI MSc program should review enrollment and course format information here: https://perimeterinstitute.ca/graduate-courses -
Quantum Field Theory I (Core), PHYS 601, October 7 - November 6, 2024
13 talks-Collection NumberC24034The first half of the course explains why fields are desirable when quantum mechanics meets special relativity. The second half introduces different kinds of spinor fields and their interactions. Instructor: Gang Xu Students who are not part of the PSI MSc program should review enrollment and course format information here: https://perimeterinstitute.ca/graduate-courses -
Beautiful Papers - October 7, 2024 - January 31, 2025
13 talks-Collection NumberC24043Pedro will lead a mini-course (no credit) at Perimeter Institute. To express your interest in attending please complete this registration form (https://forms.office.com/r/nDQ6SDxSR4) by noon on Thursday, October 3. Pedro has selected 9 papers for this mini-course. -Infrared Photons and Gravitons by Weinberg, 1965 -Determination of an Operator Algebra for the 2D Ising Model by Kadanoff and Ceva, 1971 -Confinement of Quarks by Wilson, 1974, -Phenomenological Lagrangians by Weinberg, 1979, -Gravitational Effects on and of Vacuum Decay by Coleman and De Luccia, 1980 -Classical and Quantum Gravity Effects from Planckian Energy Superstring Collisions by Amati, Ciafaloni and Veneziano, 1987 -Quantum Spin Chains and The Haldane Gap by Affleck, 1988 -The Large N Limit of SFTs and Supergravity by Maldacena, 1997 -Entanglement Entropy and Quantum Field Theory by Calabrese and Cardy, 2008 If you think there are super nice papers that are missing that could be better than some of these in a particular topic please contact Pedro directly ([email protected]). The format will be: A] Pedro will give a 1h30m lecture about one of these papers on a Monday or a Friday (the Monday or Friday right after B] unless there is a holiday) B] One week later, X students give a presentation of Y minutes about important recent papers that refer/are related to that paper. At the end of this lecture we give feedback about those presentations. What is X and what is Y depends on how many students volunteer to present. Of course, people who just want to attend without presenting are also most welcome! Location: Alice Room, 3rd Floor, Perimeter Institute, 31 Caroline St N, Waterloo Recording/Zoom Details: Lectures will be recorded for PIRSA; Zoom link will be provided to registered participants. Building Access: Participants who do not have an access card for Perimeter Institute must sign in at the security desk before each session. When attending the lectures you can use the free self-serve coffee/water station on the ground floor. Meals and snacks at the on-site Black Hole Bistro are available at the full menu cost. -
Celestial Holography Summer School 2024
27 talks-Collection NumberC24028Perimeter Institute is happy 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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String Theory 2023/24
13 talks-Collection NumberC24025The course covers the basics of String Theory: bosonic strings, D-branes, a bit of superstrings.
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QFT III 2023/24
13 talks-Collection NumberC24010This survey course introduces some advanced topics in quantum field theory and string theory. Topics may include anomalies, conformal field theory, and bosonic string theory and are subject to change depending on the topics covered in the TBD elective course.
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Twisted Holography Mini-Course
6 talks-Collection NumberC23050This mini-course will introduce twisted holography, which is holography for BPS subsectors of gauge theory and gravity. We will start by introducing the B-model topological string from the space-time perspective, before discussing branes, backreaction, and the holographic duality.
Zoom: https://pitp.zoom.us/j/98839130613?pwd=SExFK0ZVYzJ3NmJhU1RFa21PWU1qQT09
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Quantum Spectral Curve and Three Point Functions mini-course
5 talks-Collection NumberC23049In this mini-course we will describe some recent integrability developments in N=4 SYM. Pedro will start with some overview of three point functions in this theory. Paul will introduce the powerful Quantum Spectral Curve formalism describing the full planar spectrum of N=4 SYM starting with some elementary spin chain introduction. In this formalism, each operator in the theory is governed by a (set of) Q-function(s). In his last lecture Paul will walk us through an explicit example from beginning to end of a QSC solution. Pedro will then describe some explorations on three point correlation functions in this theory. The goal would be to have a machine where three Q-functions are given as input and a three-point function is spit out as output. We will describe where we are in this quest.
No Zoom link or hybrid participation available. Registration is not required.
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Strings 2023
30 talks-Collection NumberC23001The Perimeter Institute for Theoretical Physics is delighted to host the 33rd installment of Strings, the flagship annual conference for the extended string theory community.
Strings 2023 will take place at PI July 24-29. Capacity is limited to 200 in-person attendees. The programming will incorporate an interactive simulcast for virtual attendees.Recorded talks: https://pirsa.org/C23001
Organizing Committee: Sabrina Pasterski,* Freddy Cachazo, Kevin Costello, Davide Gaiotto, Jaume Gomis, Rob Myers, Pedro Vieira, & Alex Buchel.
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.
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Mini-Course of Numerical Conformal Bootstrap
15 talks-Collection NumberC23030This 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), Gross-Neveu-Yukawa 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/Bootstrap-Mini-Course
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.