Format results

18 talksCollection Number C20003
Talk

PSI 2019/2020  Quantum Matter Part 1  Lecture 1
Alioscia Hamma Università degli Studi di Napoli Federico II

PSI 2019/2020  Quantum Matter Part 1  Lecture 2
Alioscia Hamma Università degli Studi di Napoli Federico II

PSI 2019/2020  Quantum Matter Part 1  Lecture 3
Alioscia Hamma Università degli Studi di Napoli Federico II

PSI 2019/2020  Quantum Matter Part 1  Lecture 4
Alioscia Hamma Università degli Studi di Napoli Federico II

PSI 2019/2020  Quantum Matter Part 1  Lecture 5
Alioscia Hamma Università degli Studi di Napoli Federico II

PSI 2019/2020  Quantum Matter Part 1  Lecture 6
Alioscia Hamma Università degli Studi di Napoli Federico II

PSI 2019/2020  Quantum Matter Part 1  Lecture 7
Alioscia Hamma Università degli Studi di Napoli Federico II

PSI 2019/2020  Quantum Matter Part 1  Lecture 8
Alioscia Hamma Università degli Studi di Napoli Federico II


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


The Cohomology of Groups (JohnsonFreyd/Guo)
11 talksCollection Number C19045Talk

The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 1

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University


The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 2

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University


The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 3

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University


The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 4

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University


The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 5

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University


The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 6

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University


The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 7

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University


The Cohomology of Groups (JohnsonFreyd/Guo)  Lecture 8

Meng Guo University of Illinois UrbanaChampaign

Theo JohnsonFreyd Dalhousie University



General Relativity for Cosmology (Kempf)
24 talksCollection Number C19007Talk

General Relativity for Cosmology  Lecture 1
Achim Kempf University of Waterloo

General Relativity for Cosmology  Lecture 2
Achim Kempf University of Waterloo

General Relativity for Cosmology  Lecture 3
Achim Kempf University of Waterloo

General Relativity for Cosmology  Lecture 4
Achim Kempf University of Waterloo

General Relativity for Cosmology  Lecture 5
Achim Kempf University of Waterloo

General Relativity for Cosmology  Lecture 6
Achim Kempf University of Waterloo

General Relativity for Cosmology  Lecture 7
Achim Kempf University of Waterloo

General Relativity for Cosmology  Lecture 8
Achim Kempf University of Waterloo


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)


PSI 2019/2020  Condensed Matter (Wang)
16 talksCollection Number C19043Talk

PSI 2019/2020  Condensed Matter (Wang)  Lecture 1
Chong Wang Perimeter Institute for Theoretical Physics

PSI 2019/2020  Condensed Matter (Wang)  Lecture 2
Chong Wang Perimeter Institute for Theoretical Physics

PSI 2019/2020  Condensed Matter (Wang)  Lecture 3
Chong Wang Perimeter Institute for Theoretical Physics

PSI 2019/2020  Condensed Matter (Wang)  Lecture 4
Chong Wang Perimeter Institute for Theoretical Physics

PSI 2019/2020  Condensed Matter (Wang)  Lecture 5
Chong Wang Perimeter Institute for Theoretical Physics

PSI 2019/2020  Condensed Matter (Wang)  Lecture 6
Chong Wang Perimeter Institute for Theoretical Physics

PSI 2019/2020  Condensed Matter (Wang)  Lecture 7
Chong Wang Perimeter Institute for Theoretical Physics

PSI 2019/2020  Condensed Matter (Wang)  Lecture 8
Chong Wang Perimeter Institute for Theoretical Physics


PSI 2019/2020  Quantum Field Theory II (David)
16 talksCollection Number C19042Talk

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 Imperial College London

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)


PSI 2019/2020  Statistical Mechanics (Vieira)
14 talksCollection Number C19041Talk

PSI 2019/2020  Statistical Mechanics (Vieira)
Pedro Vieira Perimeter Institute for Theoretical Physics
PIRSA:19090119 
PSI 2019/2020  Statistical Mechanics (Vieira)  Lecture 2
Pedro Vieira Perimeter Institute for Theoretical Physics

PSI 2019/2020  Statistical Mechanics (Vieira)  Lecture 3
Pedro Vieira Perimeter Institute for Theoretical Physics

PSI 2019/2020  Statistical Mechanics (Vieira)  Lecture 4
Pedro Vieira Perimeter Institute for Theoretical Physics

PSI 2019/2020  Statistical Mechanics (Vieira)  Lecture 5
Pedro Vieira Perimeter Institute for Theoretical Physics

PSI 2019/2020  Statistical Mechanics (Vieira)  Lecture 6
Pedro Vieira Perimeter Institute for Theoretical Physics

PSI 2019/2020  Statistical Mechanics (Vieira)  Lecture 7
Pedro Vieira Perimeter Institute for Theoretical Physics

PSI 2019/2020  Statistical Mechanics (Vieira)  Lecture 8
Pedro Vieira Perimeter Institute for Theoretical Physics


PSI 2019/2020  Quantum Field Theory (Wohns/Xu)
14 talksCollection Number C19040Talk

PSI 2019/2020  Relativity (Kubiznak)
15 talksCollection Number C19039Talk


PSI 2019/2020  Relativity (Kubiznak)  Lecture 2
David Kubiznak Charles University

PSI 2019/2020  Relativity (Kubiznak)  Lecture 3
David Kubiznak Charles University

PSI 2019/2020  Relativity (Kubiznak)  Lecture 4
David Kubiznak Charles University

PSI 2019/2020  Relativity (Kubiznak)  Lecture 5
David Kubiznak Charles University

PSI 2019/2020  Relativity (Kubiznak)  Lecture 6
David Kubiznak Charles University

PSI 2019/2020  Relativity (Kubiznak)  Lecture 7
David Kubiznak Charles University

PSI 2019/2020  Relativity (Kubiznak)  Lecture 8
David Kubiznak Charles University


PSI 2019/2020  Quantum Matter Part 1
18 talksCollection Number C20003PSI 2019/2020  Quantum Matter Part 1 
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.

The Cohomology of Groups (JohnsonFreyd/Guo)
11 talksCollection Number C19045The Cohomology of Groups (JohnsonFreyd/Guo) 
General Relativity for Cosmology (Kempf)
24 talksCollection Number C19007General Relativity for Cosmology (Kempf) 
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.

PSI 2019/2020  Condensed Matter (Wang)
16 talksCollection Number C19043PSI 2019/2020  Condensed Matter (Wang) 
PSI 2019/2020  Quantum Field Theory II (David)
16 talksCollection Number C19042PSI 2019/2020  Quantum Field Theory II (David) 
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.

PSI 2019/2020  Statistical Mechanics (Vieira)
14 talksCollection Number C19041PSI 2019/2020  Statistical Mechanics (Vieira) 
PSI 2019/2020  Quantum Field Theory (Wohns/Xu)
14 talksCollection Number C19040PSI 2019/2020  Quantum Field Theory (Wohns/Xu) 
PSI 2019/2020  Relativity (Kubiznak)
15 talksCollection Number C19039PSI 2019/2020  Relativity (Kubiznak)