Particle physics is the science which identifies nature's constituents and interactions at the most fundamental level, with an emphasis on comparing theoretical ideas with both terrestrial experiments and astrophysical observations. This mandate gives it a strong overlap with string theory, quantum gravity and cosmology. Particle physicists at Perimeter Institute are currently involved in identifying how cosmological observations and terrestrial accelerator and underground experiments constrain the theoretical possibilities for physics beyond the Standard Model.
Format results

Collection Number C24009

TRISEP 2023
39 talksCollection Number C23020Talk

Quantum Simulators of Fundamental Physics
23 talksCollection Number C23019Talk


Simulating onedimensional quantum chromodynamics on a quantum computer: Realtime evolutions of tetra and pentaquarks
Christine Muschik Institute for Quantum Computing (IQC)


Five short talks  see description for talk titles

Barbara Soda Perimeter Institute for Theoretical Physics

Dalila Pirvu Perimeter Institute for Theoretical Physics
 Leonardo Solidoro, Pietro Smaniotto, Kate Brown


First observations of false vacuum decay in a BEC
Ian Moss Newcastle University

Building Quantum Simulators for QuFTs
Jorg Schmiedmayer Technical University of Vienna


Language models for simulating the dynamics of quantum systems
Juan Carrasquilla Vector Institute for Artificial Intelligence


School on TableTop Experiments for Fundamental Physics
27 talksCollection Number C22030Talk

Welcome & Opening Remarks

Asimina Arvanitaki Perimeter Institute for Theoretical Physics

Junwu Huang Perimeter Institute for Theoretical Physics

Davide Racco University of Zurich
PIRSA:22090001 

Standard Model & EDM, g2
Jesse Thaler Massachusetts Institute of Technology (MIT)


5th forces and astrophysical probes
Peter Graham Stanford University

Atom interferometry, atomic clocks
Jason Hogan Stanford Law School  The Bill Lane Centre for the American West

Non thermal DM/Misalignment
Giovanni Villadoro The Abdus Salam International Centre for Theoretical Physics (ICTP)

Non thermal DM/Misalignment
Giovanni Villadoro The Abdus Salam International Centre for Theoretical Physics (ICTP)

Atom interferometry, atomic clocks
Jason Hogan Stanford Law School  The Bill Lane Centre for the American West


Octonions and the Standard Model
16 talksCollection Number C21001Talk

Welcome and Opening Remarks
Kirill Krasnov University of Nottingham

Finite quantum geometry, octonions and the theory of fundamental particles.
Michel DuboisViolette University of ParisSaclay

Supersymmetry and RCHO revisited
Paul Townsend University of Cambridge

Spin (8,9,10), Octonions and the Standard Model
Kirill Krasnov University of Nottingham

Gravity as the square of gauge theory
Leron Borsten Imperial College London

A Magic Pyramid of Supergravity Theories from YangMills Squared
Mia Hughes Imperial College London

Division algebraic symmetry breaking

Cohl Furey Humboldt University of Berlin

Mia Hughes Imperial College London


Clifford algebra of the Standard Model
Ivan Todorov Bulgarian Academy of Sciences


Quantum Gravity 2020
22 talksCollection Number C20031Talk

Welcome and Opening Remarks
Bianca Dittrich Perimeter Institute for Theoretical Physics

Approaches to Quantum Gravity: Key Achievements and Open Issues
Hermann Nicolai MaxPlanckInstitut für Gravitationsphysik

Quantum gravity from the loop perspective
Alejandro Perez Centre de Physique Théorique

Lessons for quantum gravity from quantum information theory
Daniel Harlow Massachusetts Institute of Technology (MIT)

Understanding of QG from string theory
Herman Verlinde Princeton University

Progress in horizon thermodynamics
Aron Wall University of Cambridge

Asymptotically Safe Amplitudes from the Quantum Effective Action
Frank Saueressig Radboud Universiteit Nijmegen

The Remarkable Roundness of the Quantum Universe
Renate Loll Radboud Universiteit Nijmegen


PSI 2019/2020  Standard Model and Beyond  Part 2
7 talksCollection Number C20011Talk

PSI 2019/2020  Standard Model and Beyond part 2  Lecture 1
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond part 2  Lecture 2
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond part 2  Lecture 3
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond part 2  Lecture 5
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond part 2  Lecture 6
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond part 2  Lecture 7
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond part 2  Lecture 8
Latham Boyle University of Edinburgh


PSI 2019/2020  Standard Model and Beyond  Part 1
12 talksCollection Number C20005Talk

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 1
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 2
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 3
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 5
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 6
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 7
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 8
Latham Boyle University of Edinburgh

PSI 2019/2020  Standard Model and Beyond  Part 1  Lecture 9
Latham Boyle University of Edinburgh


Simplicity III
17 talksCollection Number C19044Talk

On the possible role of nilpotent internal symmetries in unification
Andras Laszlo Wigner Research Center for Physics

Rethinking the origin of neutrino masses: the role of gravity
Lena Funcke University of Bonn

Swampland Constraints on Neutrino Masses and Dark Energy
Irene Valenzuela Cornell University


Exceptional Quantum Algebra for the Standard Model of Particle Physics
Ivan Todorov Bulgarian Academy of Sciences

SO(7,7) Structure of Standard Model Fermions
Kirill Krasnov University of Nottingham

The Standard Model from A Jordan Algebra
Latham Boyle University of Edinburgh

Particle Theory from Jordan Geometry
Shane Farnsworth Max Planck Institute for Gravitational Physics  Albert Einstein Institute (AEI)


Cosmological Frontiers in Fundamental Physics 2019
22 talksCollection Number C19037Talk

CPTSymmetric Universe
Latham Boyle University of Edinburgh

Brane cosmology and the selftuning of the cosmological constant
Francesco Nitti Université Paris Cité

New Physics in the RayleighJeans tale of the CMB and cosmic 21cm signal
Maxim Pospelov University of Minnesota

Gravitational waves in the inhomogeneous Universe
Masamune Oguri Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU)

Weak Gravity Conjecture From Amplitudes’ Positivity
Brando Bellazzini Institut de Physique Théorique (IPhT)  CEA

Discussion: Where in the Cosmos should we look for novel physics?
Elias Kiritsis University of Crete

Gravitational wave standard sirens
Samaya Nissanke University of Amsterdam

Cosmology and fundamental physics with FRBs
UeLi Pen Perimeter Institute for Theoretical Physics


TriInstitute Summer School on Elementary Particles 2018
39 talksCollection Number C18015Talk

Asymptotic Safety in a Dark Universe
17 talksCollection Number C18012Talk

Charting Fundamental Interactions
Francesco Sannino CP3Origins

Asymptotic safety with and without supersymmetry
Daniel Litim University of Sussex


Progress in constructing an Asymptotically safe Standard Model
Steven Abel Durham University

Cosmological nonConstant Problem
Niayesh Afshordi University of Waterloo


UVcomplete relativistic field theories and softened gravity
Alberto Salvio Scuola Normale Superiore di Pisa

Asymptotic safety of gravitymatter systems and effective universality
Manuel Reichert University of Southern Denmark


Particle Physics
Collection Number C24009This course will cover phenomenological studies and experimental searches for new physics beyond the Standard Model, including: naturalness, extra dimension, supersymmetry, grand unification, dark matter candidates (WIMPs and axions) and their detection.

TRISEP 2023
39 talksCollection Number C23020Talks are recorded and posted on PIRSA (within approx 24 hours).
The 2023 TriInstitute Summer School on Elementary Particles (TRISEP) will be held June 1930, 2023 in Perimeter Institute for Theoretical Physics, Waterloo, ON, Canada.
TRISEP is an international summer school organized jointly by the Perimeter Institute for Theoretical Physics, SNOLAB, and TRIUMF Canada's laboratory for particle and nuclear physics. TRISEP will feature lectures by leading experts in the field of particle physics in its broadest sense and is designed to be very interactive with ample time for questions, discussions and interaction with the speakers. The school is intended for graduate students of all levels who were already exposed to quantum field theory.Registration for in person attendance to TRISEP is now open. Anyone requiring financial assistance to attend must apply by May 19. Requests for financial assistance are vetted on a casebycase basis and application for funding is not guaranteed.
Previous TRISEP Schools:
2022, 2021, 2019, 2018, 2017, 2016, 2015, 2014 and 2013.
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 Simulators of Fundamental Physics
23 talksCollection Number C23019This meeting will bring together researchers from the quantum technology, atomic physics, and fundamental physics communities to discuss how quantum simulation can be used to gain new insight into the physics of black holes and the early Universe. The core program of the workshop is intended to deepen collaboration between the UKbased Quantum Simulators for Fundamental Physics (QSimFP; https://www.qsimfp.org) consortium and researchers at Perimeter Institute and neighbouring institutions. The weeklong conference will consist of broadlyaccessible talks on work within the consortium and work within the broader community of researchers interested in quantum simulation, as well as a poster session and ample time for 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.

School on TableTop Experiments for Fundamental Physics
27 talksCollection Number C22030This School aims at bringing together graduate students and junior postdocs, both theorists and experimentalists, who are interested in proposing and realizing new tabletop experiments to test fundamental physics. The goal is to allow them to interact and learn from each other, forming a community.
The School will consist of some theoretical lectures for experimentalists, and experimental lectures for theorists. The scope is to offer basic and relevant notions of each field to physicists with a different background, in order to fill some of the gaps of the respective academic curricula.
The theoretical lectures will cover a review of the Standard Model with emphasis on precision tests, such as the search of new longrange forces and of electrical dipole moments. Another main topic will be a focused introduction on Dark Matter, looking at its cosmological production mechanisms, its impact on astrophysics and cosmology, and its laboratory detection.
On the experimental side, the School will cover a range of techniques for probing weak electromagnetic fields, short distance forces, single photons, fundamental electric dipole moments, as well as atom interferometers and optomechanical sensors.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.

Octonions and the Standard Model
16 talksCollection Number C21001Over the years, various researchers have suggested connections between the octonions and the standard model of particle physics. The past few years, in particular, have been marked by an upsurge of activity on this subject, stimulated by the recent observation that the standard model gauge group and fermion representation can be elegantly characterized in terms of the octonions. This workshop, which will be the first ever on this topic, is intended to bring this new community together in an attempt to better understand these ideas, establish a common language, and stimulate further progress.
The workshop will consist of an hourlong talk every Monday at noon (EST), with the first talk on Monday February 8, and the final talk on Monday May 17.

Quantum Gravity 2020
22 talksCollection Number C20031 
PSI 2019/2020  Standard Model and Beyond  Part 2
7 talksCollection Number C20011PSI 2019/2020  Standard Model and Beyond  Part 2 
PSI 2019/2020  Standard Model and Beyond  Part 1
12 talksCollection Number C20005PSI 2019/2020  Standard Model and Beyond  Part 1 
Simplicity III
17 talksCollection Number C19044This crossdisciplinary workshop gathers theorists who have been working on novel approaches to understanding the structure of the Standard Model and its link to cosmology and gravity. It follows the previous Simplicity I and II workshops at Princeton University (2014) and Fermilab (2016) and will be a small informal meeting with plenty of room for discussions.

Cosmological Frontiers in Fundamental Physics 2019
22 talksCollection Number C19037The workshops focuses on novel frontiers in observational cosmology and astrophysics and how they shed light fundamental questions in understanding the universe. Registration for this workshop is now open.

TriInstitute Summer School on Elementary Particles 2018
39 talksCollection Number C18015The 2018 TriInstitute Summer School on Elementary Particles (TRISEP) will be held July 920 2018 in Perimeter Institute for Theoretical Physics Waterloo ON, Canada. TRISEP is an international summer school organized jointly by the Perimeter Institute for Theoretical Physics, SNOLAB, and TRIUMF Canada s laboratory for particle and nuclear physics. TRISEP will feature lectures by leading experts in the field of particle physics in its broadest sense and is designed to be very interactive with ample time for questions, discussions and interaction with the speakers. The school is intended for graduate students of all levels who were already exposed to quantum field theory. For further information, please visit http:///.trisep.ca

Asymptotic Safety in a Dark Universe
17 talksCollection Number C18012The asymptotic safety paradigm is currently emerging as a highly promising idea for BeyondStandardModel physics with key progress in asymptotically safe quantum gravity and asymptotically safe matter models. The last years have seen not only the development of asymptotically safe gravitymatter models but also the discovery of asymptotically safe beyond Standard Model matter models that are under control in perturbation theory. New exciting avenues in (astro) particle physics are now waiting to be explored. For example although the nature of dark matter is a longstanding riddle it is a fact that experimental searches have so far not provided any direct clues but have instead come up with ever more stringent constraints on theoretically preferred regions of parameter space for darkmattermodels. Thus the key to unraveling this riddle could be a new theoretical paradigm to guide model builders. This workshop aims at exploring whether asymptotic safety can be a candidate for this new paradigm. We aim to bring together experts on phenomenological models and quantum gravity to probe both the theoretical viability and empirical signatures of asymptotically safe extensions of the standard model that include gravity. To facilitate a highly productive meeting that can trigger new collaborations each talk will be followed up by 1520 minutes discussion time. Further each day of the workshop will feature a dedicated discussion session. Participants will be encouraged to contribute questions for the discussion both before as well as during the workshop. The last day of the workshop will conclude with a roadmap discussion during which all participants will be given the opportunity to propose concrete suggestions for followup work that might lead into future joint projects.