Format results

22 talksCollection Number C20031
Talk

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


Geometric Representation Theory
24 talksCollection Number C20030Talk


Singularities of Schubert varieties within a right cell
Martina Lanini Università degli Studi di Roma Tor Vergata

Yangians and cohomological Hall algebras of Higgs sheaves on curves
Olivier Schiffmann University of ParisSaclay

Tate's thesis in the de Rham setting
Sam Raskin The University of Texas at Austin

Fundamental local equivalences in quantum geometric Langlands
Gurbir Dhillon Stanford University

Zalgebras from Coulomb branches
Oscar Kivinen California Institute of Technology

Cotangent complexes of moduli spaces and Ginzburg dg algebras
Sarah Scherotzke University of Luxembourg



Elliptic Cohomology and Physics
11 talksCollection Number C20029Talk

Projective elliptic genera and applications
Fei Han National University of Singapore

Topological Modular Forms and Quantum Field Theory
Davide Gaiotto Perimeter Institute for Theoretical Physics

Equivariant elliptic cohomology with integral coefficients
Lennart Meier Utrecht University

The de Rham model for elliptic cohomology from physics
Arnav Tripathy Harvard University

Quasisymmetric characteristic numbers for Hamiltonian toric manifolds
Jack Morava Johns Hopkins University

Codes, vertex algebras and topological modular forms
Gerd Laures RuhrUniversität Bochum


Elliptic characteristic classes, bow varieties, 3d mirror duality
Richard Rimanyi University of North Carolina  Chapel Hll


PIMan: The Second Perimeter InstituteChapman Workshop on Quantum Foundations
Collection Number C20024 
Echoes in Southern Ontario
11 talksCollection Number C20018Talk




Echoes and Holography
Krishan Saraswat University of Southern California

Echoes in Numerical Relativity
Qingwen Wang Perimeter Institute for Theoretical Physics



Echoes after GW170817  Petra Duff
Amanda Ferneyhough Perimeter Institute for Theoretical Physics


Centre for the Universe  Waterloo Centre for Astrophysics Day
Collection Number C20017 
Indefinite Causal Structure
26 talksCollection Number C19049Talk


10 years of the quantum SWITCH: state of the art and new perspectives
Giulio Chiribella The University of Hong Kong (HKU)

Cyclic quantum causal models and violations of causal inequalities
Ognyan Oreshkov Université Libre de Bruxelles

TBA
Laura Henderson University of Waterloo

Composing causal orderings
Aleks Kissinger University of Oxford

Quantum principle of relativity
Andrzej Dragan University of Warsaw


What happens when we quantize time?
Alexander Smith Dartmouth College


Symmetry, Phases of Matter, and Resources in Quantum Computing
16 talksCollection Number C19048Talk

Symmetry, topology, and thermal stability
Stephen Bartlett University of Sydney

Symmetryprotected topologically ordered phases for measurementbased quantum computation
Akimasa Miyake University of New Mexico

A resource theory of nonclassicality in Bell scenarios
Robert Spekkens Perimeter Institute for Theoretical Physics

Variational Quantum Eigensolvers and contextuality
Peter Love Tufts University

Magic resource theories and classical simulation
Earl Campbell University of Sheffield

Classical algorithms for quantum mean values
David Gosset Institute for Quantum Computing (IQC)

Finegrained quantum supremacy and stabilizer rank
Tomoyuki Morimae Kyoto University

Towards local testability for quantum coding
Anthony Leverrier Centre Inria de Paris (INRIA)


Emmy Noether Workshop: The Structure of Quantum Space Time
25 talksCollection Number C19047Talk

Welcome and Opening Remarks
Bianca Dittrich Perimeter Institute for Theoretical Physics

Quantum Spacetime from Lattice Gravity à la CDT
Renate Loll Radboud Universiteit Nijmegen

How complement maps can cure divergences
Sylvie Paycha Universität Potsdam

The gravitational Wilson loop and the nonAbelian Stokes' theorem
Reiko Toriumi Okinawa Institute of Science and Technology (OIST)

The dynamics of difference
Lee Smolin Perimeter Institute for Theoretical Physics


Probing fundamental physics with gravitational waves
Cecilia Chirenti Universidade Federal do ABC

Implications of the Quantum Nature Spacetime for the Big Bang and Black Holes
Abhay Ashtekar Pennsylvania State University


Everpresent Lambda: Theory Meets Observations
15 talksCollection Number C19046Talk


Introduction to Everpresent Lambda
Rafael Sorkin Perimeter Institute for Theoretical Physics

Status of Hubble tension in Cosmology
Niayesh Afshordi University of Waterloo

Causal Set Action/Entropy
Yasaman Kouchekzadeh Yazdi Dublin Institute For Advanced Studies

Observational constraints on modified gravity and dark energy
Jian Li Simon Fraser University (SFU)

Supplementary considerations on Everpresent Lambda
Rafael Sorkin Perimeter Institute for Theoretical Physics


Implementing a stochastic dark energy framework into CAMB
Levon Pogosian Simon Fraser University (SFU)


Gravitational Waves Outside the Boxes
Collection Number C18033 
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)


Quantum Gravity 2020
22 talksCollection Number C20031 
Geometric Representation Theory
24 talksCollection Number C20030 
Elliptic Cohomology and Physics
11 talksCollection Number C20029 
PIMan: The Second Perimeter InstituteChapman Workshop on Quantum Foundations
Collection Number C20024PIMan: The Second Perimeter InstituteChapman Workshop on Quantum Foundations 

Centre for the Universe  Waterloo Centre for Astrophysics Day
Collection Number C20017The Centre for the Universe and the Waterloo Centre for Astrophysics are exciting new centres for cosmology, with excellent complementarity. CFU focuses mainly on theory, WCA mainly on observation but we both recognise that the most important advances happen when observation and theory successfully connect. In order to promote this connection, CFU and WCA are collaborating on a number of initiatives including regular CFUWCA days.

Indefinite Causal Structure
26 talksCollection Number C19049There has been a surge of interest in indefinite causal structure the idea that cause and effect can no longer be sharply distinguished. Motivated both by experimentation with quantum switches and quantum gravity there can be situations in which there is no matterofthefact as to what the causal structure of spacetime is. This meeting will bring together workers in Quantum Foundations and Quantum Gravity in both theoretical experimental physics to discuss the state of the art of current research and set new directions for this emerging subdiscipline.

Symmetry, Phases of Matter, and Resources in Quantum Computing
16 talksCollection Number C19048Our conference covers three related subjects: quantum faulttolerance magic states and resource theories and quantum computational phases of matter. The linking elements between them are (a) on the phenomenological side the persistence of computational power under perturbations and (b) on the theory side symmetry. The latter is necessary for the working of all three. The subjects are close but not identical and we expect crossfertilization between them.Fault tolerance is an essential component of universal scalable quantum computing.However known practical methods of achieving fault tolerance are extremely resource intensive. Distillation of magic states is in the current paradigm of faulttolerance the costliest operational component by a large margin. It is therefore pertinent to improve the efficiency of such procedures study theoretical limits of efficiency and more generally to establish a resource theory of quantum state magic. During the workshop we will focus on a fundamental connection between faulttolerant protocols and symmetries.``Computational phases of matters are a surprising link between quantum computation and condensed matter physics. Namely in the presence of suitable symmetries the ground states of spin Hamiltonians have computational power within the scheme of measurementbased quantum computation and this power is uniform across physical phases. Several computationally universal phases have to date been discovered. This subject is distinct from the above but linked to them by the feature of persistence of computational power under deformations and deviations.

Emmy Noether Workshop: The Structure of Quantum Space Time
25 talksCollection Number C19047Understanding the smallscale structure of spacetime is one of the biggest challenges faced by modern theoretical physics. There are many different attempts to solve this problem and they reflect the diversity of approaches to quantum gravity. This workshop will bring together researchers from a wide range of quantum gravity approaches and give them an opportunity to exchange ideas and gain new insights.

Everpresent Lambda: Theory Meets Observations
15 talksCollection Number C19046One of the biggest mysteries in cosmology and fundamental physics is the nature of dark energy that is responsible for the current acceleration of cosmic expansion. While a cosmological constant provides the simplest model of dark energy recent observational tensions amongst supernovae Ia gravitational lensing time delays and cosmic microwave background suggest the need for a more complex dynamical dark energy. One of the oldest proposals for a dynamical dark energy is Everpresent Lambda proposed by Sorkin which is inspired by the causal set model of quantum gravity. It was recently shown that this model can potentially resolve the tensions in cosmological observations. The meeting aims to bring together a small number of experts in quantum gravity causal sets and cosmology to carefully examine the models theoretical predictions and its observational tests and pave the way for what might be an(other) exciting insight from cosmology into the fundamental nature of spacetime.

Gravitational Waves Outside the Boxes
Collection Number C18033With the era of gravitational wave astronomy started and a rapid increase in sensitivity and frequency bands, unprecedented opportunities to unravel longstanding questions as well as new opportunities open up. This workshop will focus on discussing outofthebox ideas for this exciting field.

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.