Format results

25 talksCollection Number C19047
Talk

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 University of Potsdam

The gravitational Wilson loop and the nonAbelian Stokes' theorem
Reiko Toriumi Okinawa Institute of Science and Technology Graduate University

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)


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)


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 Canadian Institute for Theoretical Astrophysics (CITA)


Boundaries and Defects in Quantum Field Theory
21 talksCollection Number C19035Talk

Symmetries and Dualities of Abelian TQFTs
Jaume Gomis Perimeter Institute for Theoretical Physics

TBD
Leonardo Rastelli Stony Brook University

Universality at large transverse spin in defect CFTs
Madalena Lemos European Organization for Nuclear Research (CERN)

Domain Walls in SuperQCD
Francesco Benini SISSA International School for Advanced Studies

Weyl Anomaly Induced Current and Holography
RongXin Miao Sun Yatsen University

Wilson line impurities, flows and entanglement entropy
Prem Kumar Swansea University

Anomalies in the Space of Coupling Constants
Nathan Seiberg Institute for Advanced Study (IAS)



Bootstrap 2019
11 talksCollection Number C19026Talk

CFT amplitudes
Marc Gillioz SISSA International School for Advanced Studies

Flux Tube Smatrix Bootstrap
Andrea Guerrieri European Organization for Nuclear Research (CERN)

Precision Islands for ABJM theory from Mixed Correlator Bootstrap
Shai Chester Weizmann Institute of Science Canada


Talk 13 via live stream
Carlo Meneghelli University of Oxford

Spinning Conformal Bootstrap in 4d
Denis Karteev L'Ecole Polytechnique Federale de Lausanne (EPFL)

Talk 15 via live stream
Martin Kruczenski Purdue University

Talk 21 via live stream

Walter Landry California Institute of Technology

David SimmonsDuffin Institute for Advanced Study (IAS)



Machine Learning for Quantum Design
30 talksCollection Number C19025Talk


Simulating Thermal and Quantum Fluctuations in Materials and Molecules
Michele Ceriotti L'Ecole Polytechnique Federale de Lausanne (EPFL)

How to use a Gaussian Boson Sampler to learn from graphstructured data
Maria Schuld University of KwaZuluNatal

Machine learning meets quantum physics
DongLing Deng Tsinghua University


Engineering Programmable Spin Interactions in a NearConcentric Cavity
Emily Davis Stanford University

Alleviating the sign structure of quantum states
Giacomo Torlai Flatiron Institute

Navigating the quantum computing field as a high school student
Tanisha Bassan The Knowledge Society


QFT for Mathematicians
25 talksCollection Number C19023Talk

Lecture 1: Factorization Algebras and the General Structure of QFT
Philsang Yoo Seoul National University

Lecture 1: Supersymmetric Quantum Mechanics and All That
Mathew Bullimore Durham University

TA Session: 0d QFT and Feynman diagrams
Theo JohnsonFreyd Dalhousie University

Lecture 1: Boundary Conditions and Extended Defects
Davide Gaiotto Perimeter Institute for Theoretical Physics

Lecture 2: Factorization Algebras and the General Structure of QFT
Kevin Costello Perimeter Institute for Theoretical Physics

TA Session: Supersummetry Algebras
Chris Elliott University of Massachusetts Amherst

Lecture 3: Factorization Algebras and the General Structure of QFT
Philsang Yoo Seoul National University

Lecture 2: Supersymmetric Quantum Mechanics and All That
Mathew Bullimore Durham University


ManyBody States and Dynamics Workshop II
8 talksCollection Number C19024Talk

Simulating an expanding universe on Google's Bristlecone
Guifre Vidal Alphabet (United States)

Preparing Critical and Thermofield Double States on a Quantum Computer
Timothy Hsieh Perimeter Institute for Theoretical Physics

TensorNetwork: accelerating tensor network computations and improving the coding experience
Ashley Milsted California Institute of Technology

Maximally sensitive sets of states
Daniel Gottesman University of Maryland, College Park

Quantum simulation of 2D and 3D spin models in a linear chain of ions
KaziRajibul Islam Institute for Quantum Computing (IQC)

Polariton Graph Network
Na Young Kim Institute for Quantum Computing (IQC)


Quantum Simulation of Lattice Field Theories with Microwave Photons
Christopher Wilson Institute for Quantum Computing (IQC)


Quantum Matter: Emergence & Entanglement 3
24 talksCollection Number C19021Talk

Theory of a Planckian metal with a remnant Fermi surface.
Subir Sachdev Harvard University

Twisted foliated fracton order
Xie Chen California Institute of Technology

Landau ordering and other phase transitions beyond the Landau paradigm
Senthil Todadri Massachusetts Institute of Technology (MIT)  Department of Physics

QED and quantum magnetism in (2+1)d
Chong Wang Perimeter Institute for Theoretical Physics


Shadow of complex fixed point: Approxmiate conformality of Q>4 Potts model
Han Ma Perimeter Institute for Theoretical Physics

On the relation between the magnitude and exponent of OTOCs
Yingfei Gu Harvard University

Firewalls vs. Scrambling
Beni Yoshida Perimeter Institute for Theoretical Physics


PICITA Day 2019
6 talksCollection Number C19016Talk

Angular momentum radiated by electromagnetic vs gravitational waves
Beatrice Bonga Radboud Universiteit Nijmegen

Ultralight axions and Future CMB experiments
Renee Hlozek University of Toronto

Not extending the standard cosmological model
Andrew Liddle University of Lisbon

The Astrophysics of Cosmic Rays
Tova M. YoastHull Canadian Institute for Theoretical Astrophysics (CITA)

The existence and stability of marginally trapped surfaces
Erik Schnetter Perimeter Institute for Theoretical Physics



Cohomological Hall Algebras in Mathematics and Physics
19 talksCollection Number C19018Talk

An introduction to Cohomological Hall algebras and their representations
Yan Soibelman Kansas State University

Gauge theory, vertex algebras and COHA
Davide Gaiotto Perimeter Institute for Theoretical Physics

Networks of intertwiners, 3d theories and superalgebras
Yegor Zenkevich University of Edinburgh

COHA of surfaces and factorization algebras
Mikhail Kapranov University of Tokyo

Yangians from cohomological Hall algebras
Ben Davison University of Edinburgh

Algebraic structures of T[M3] and T[M4]
Sergei Gukov California Institute of Technology (Caltech)  Division of Physics Mathematics & Astronomy

Categorification of 2d cohomological Hall algebras
Francesco Sala University of Tokyo

Short starproducts for filtered quantizations
Pavel Etingof Massachusetts Institute of Technology (MIT)


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.

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.

Boundaries and Defects in Quantum Field Theory
21 talksCollection Number C19035Boundaries and defects play central roles in quantum field theory (QFT) both as means to make contact with nature and as tools to constrain and understand QFT itself. Boundaries in QFT can be used to model impurities and also the finite extent of sample sizes while interfaces allow for different phases of matter to interact in a controllable way. More formally these structures shed light on the structure of QFT by providing new examples of dualities and renormalization group flows. Broadly speaking this meeting will focus on three areas: 1) formal and applied aspects of boundary and defect conformal field theory from anomalies and ctheorems to topological insulators 2) supersymmetry and duality from exact computations of new observables to the construction of new theories and 3) QFT in curved space and gravity from holographic computations of entanglement entropy to ideas in quantum information theory. Registration for this event is now open.

Bootstrap 2019
11 talksCollection Number C19026Quantum field theory (QFT) is a universal language for theoretical physics describing the Standard Model gravity early universe inflation and condensed matter phenomena such as phase transitions superconductors and quantum Hall fluids. A triumph of 20th century physics was to understand weakly coupled QFTs: theories whose interactions can be treated as small perturbations of otherwise freely moving particles. However weakly coupled QFTs represent a tiny island in an ocean of possibilities. They cannot capture many of the most interesting and important physical phenomena from the strong nuclear force to high temperature superconductivity.The critical challenge for the 21st century is to understand and solve strongly coupled QFTs. Meeting this challenge will require new physical insight new mathematics and new computational tools. Our collaboration combines deep knowledge of novel nonperturbative techniques with a concrete plan for attacking the problem of strong coupling. The starting point is the astonishing discovery that in numerous physical systems there is a unique quantum field theory consistent with general principles of symmetry and quantum mechanics. By analyzing the full implications of these general principles one can make sharp predictions for physical observables without resorting to approximations.This strategy is called the Bootstrap the topic of this three week program.

Machine Learning for Quantum Design
30 talksCollection Number C19025Machine learning techniques are rapidly being adopted into the field of quantum manybody physics including condensed matter theory experiment and quantum information science. The steady increase in data being produced by highlycontrolled quantum experiments brings the potential of machine learning algorithms to the forefront of scientific advancement. Particularly exciting is the prospect of using machine learning for the discovery and design of quantum materials devices and computers. In order to make progress the field must address a number of fundamental questions related to the challenges of studying manybody quantum mechanics using classical computing algorithms and hardware. The goal of this conference is to bring together experts in computational physics machine learning and quantum information to make headway on a number of related topics including: Datadrive quantum state reconstruction Machine learning strategies for quantum error correction Neuralnetwork based wavefunctions Nearterm prospects for data from quantum devices Machine learning for quantum algorithm discovery Registration for this event is now closed


ManyBody States and Dynamics Workshop II
8 talksCollection Number C19024On Thursday June 13 the Institute for Quantum Computing (IQC) and Perimeter Institute for Theoretical Physics (PI) will participate in the oneday ManyBody States and Dynamics Workshop II. The goal of the workshop is to describe ongoing efforts to experimentally realize quantum manybody states and dynamics and discuss interesting classes of states and dynamics that could be targeted. Experimentalists working on several platforms (such as photons atom and ion traps superconducting qubits excitonpolaritons or NMR) and theoreticians specialized in manybody theory (entanglement topological order gauge theories criticality chaos error correction holography) and numerical simulations (exact diagonalization Monte Carlo DMRG tensor networks) will meet for a morning workshop to identify and discuss common interests.

Quantum Matter: Emergence & Entanglement 3
24 talksCollection Number C19021This third workshop of the Perimeter Institute series Emergence and Entanglement will center around four major frontiers in quantum matter research: (i) topological matter including recently discovered phases in three dimensions and new routes toward experimental realization (ii) critical states of matter especially interacting CFTs in 2+1 dimensions and dualities (iii) stateoftheart numerical approaches to tackle such manybody problems (e.g. DMRG MERA Monte Carlo) and (iv) quantum dynamics and thermalization.

PICITA Day 2019
6 talksCollection Number C19016This is an ongoing series of meetings held two or three times per year between researchers at Perimeter Institute and CITA. The goal of these meetings is to share new ideas and encourage interaction in PI and CITA's common fields of interest through a series of informal talks followed by discussions.

Cohomological Hall Algebras in Mathematics and Physics
19 talksCollection Number C19018This workshop will bring together leading mathematicians and physicists interested in the Cohomological Hall algebra as it appears in the study of moduli spaces and in gauge and string theory.