Format results
-
Talk
-
Searching for Light Bosons with Black Hole Superradiance
Savas Dimopoulos Stanford University
-
Superradiant instabilities and rotating black holes
Sam Dolan University of Southampton
PIRSA:18050028 -
Superradiant instabilities and rotating black holes
Avery Broderick University of Waterloo
-
Measuring Stellar-Mass Black Hole Spins via X-ray Spectroscopy
James Steiner Massachusetts Institute of Technology (MIT)
-
Superradiance Beyond the Linear Regime
Frans Pretorius Princeton University
-
Characterization of compact objects with present and future ground-based gravitational-wave detectors
Salvatore Vitale Massachusetts Institute of Technology (MIT)
-
LIGO and Virgo continuous wave searches - Overview and all-sky searches
keith Riles University of Michigan–Ann Arbor
-
Directed and targeted searches for continuous gravitational waves
Sylvia Zhu Albert Einstein Institute
-
-
Talk
-
PSI 2017/2018 - Quantum Gravity - Lecture 15
Laurent Freidel Perimeter Institute for Theoretical Physics
-
PSI 2017/2018 - Quantum Gravity - Lecture 14
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2017/2018 - Quantum Gravity - Lecture 13
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2017/2018 - Quantum Gravity - Lecture 12
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2017/2018 - Quantum Gravity - Lecture 11
Maïté Dupuis Perimeter Institute for Theoretical Physics
PIRSA:18040093 -
PSI 2017/2018 - Quantum Gravity - Lecture 10
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2017/2018 - Quantum Gravity - Lecture 9
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2017/2018 - Quantum Gravity - Lecture 8
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
-
Talk
-
Welcome and Opening Remarks
Neil Turok University of Edinburgh
-
The significance of the proper time in the quantum mechanics of the gravitational field.
Claudio Bunster Centro de Estudios Científicos (CECs)
-
TBA
Viatcheslav Mukhanov Ludwig-Maximilians-Universität München (LMU)
-
Semi-classical evaluation of the 3D gravity path integral and quasi-local holography
Bianca Dittrich Perimeter Institute for Theoretical Physics
-
TBA
Emil Mottola Los Alamos National Laboratory
-
An asymptotically safe point of view on the gravitational path integral
Astrid Eichhorn University of Southern Denmark
-
The path integral for gravity and Fedosov quantization
Stefan Hollands Universität Leipzig
-
Surprises in the Path Integral for Gravity
Neil Turok University of Edinburgh
-
-
Talk
-
Quantifying the evidence for black holes with GW and EM probes
Paolo Pani Instituto Superior Tecnico - Departamento de Física
-
Echoes from the Abyss: Tentative Evidence for Planck-Scale Structure at Black Hole Horizons
Jahed Abedi University of Stavanger (UiS)
-
Improvements on the methods for searching echoes
Julian Westerweck Albert Einstein Institute
-
A model-independent search for gravitational-wave echoes
Archisman Ghosh Institucio Catalana de Recerca I Estudis Avancats (ICREA) - Universitat de Barcelona
-
An alternative significance estimation for the evidence for echoes
Alex Nielsen Albert Einstein Institute
-
Discussion: Evidence for Echoes
PIRSA:17110074 -
Inspiral Tests of Strong-field Gravity and Ringdown Tests of Quantum Black Holes
Kent Yagi University of Virginia
-
A Recipe for Echoes
Aaron Zimmerman The University of Texas at Austin
-
-
Talk
-
PSI 2017/2018 - Relativity - Lecture 15
Neil Turok University of Edinburgh
-
PSI 2017/2018 - Relativity - Lecture 14
Neil Turok University of Edinburgh
-
PSI 2017/2018 - Relativity - Lecture 13
Neil Turok University of Edinburgh
-
PSI 2017/2018 - Relativity - Lecture 12
Neil Turok University of Edinburgh
-
PSI 2017/2018 - Relativity - Lecture 11
Neil Turok University of Edinburgh
-
PSI 2017/2018 - Relativity - Lecture 10
Neil Turok University of Edinburgh
-
PSI 2017/2018 - Relativity - Lecture 9
Neil Turok University of Edinburgh
-
PSI 2017/2018 - Relativity - Lecture 8
Neil Turok University of Edinburgh
-
-
Talk
-
Semisimple Hopf algebras and fusion categories
Cesar Galindo Universidad de los Andes
-
The Hopf C*-algebraic quantum double models - symmetries beyond group theory
Andreas Bauer Freie Universität Berlin
-
Modular categories and the Witt group
Michael Mueger Radboud Universiteit Nijmegen
-
Topological Quantum Computation
Eric Rowell Texas A&M University
-
Gapped phases of matter vs. Topological field theories
Davide Gaiotto Perimeter Institute for Theoretical Physics
-
An Introduction to Hopf Algebra Gauge Theory
Derek Wise University of Erlangen-Nuremberg
-
Kitaev lattice models as a Hopf algebra gauge theory
Catherine Meusburger University of Erlangen-Nuremberg
-
Topological defects and higher-categorical structures
Jurgen Fuchs Karlstad University
-
-
Talk
-
Welcome and Opening Remarks
Bianca Dittrich Perimeter Institute for Theoretical Physics
-
Introduction to Monte Carlo methods - 1
Gerard Barkema Utrecht University
-
Introduction to Monte Carlo methods - 2
Gerard Barkema Utrecht University
-
Introduction to Tensor Network methods - 1
Guifre Vidal Alphabet (United States)
-
Introduction to Tensor Network methods - 2
Guifre Vidal Alphabet (United States)
-
Tutorial: Introduction to Monte Carlo Methods
-
Gerard Barkema Utrecht University
-
Nilas Klitgaard Radboud Universiteit Nijmegen
-
-
Tutorial: Introduction to Tensor Network methods
-
Guifre Vidal Alphabet (United States)
-
Clement Delcamp Institut des Hautes Etudes Scientifiques (IHES)
-
-
Scientific Computing and Computational Science
Erik Schnetter Perimeter Institute for Theoretical Physics
-
-
Talk
-
Shape Dynamics: Perspectives and Problems
Julian Barbour University of Oxford
-
The quantum equation of state of the universe produces a small cosmological constant
Tim Koslowski Technical University of Applied Sciences Würzburg-Schweinfurt
-
Inflationary and pre-inflationary dynamics with the Starobinsky potential
Beatrice Bonga Radboud Universiteit Nijmegen
-
Relationalism and the speed of light: Are we in a relationship?
Yuri Bonder Universidad Nacional Autónoma De Mexico (UNAM)
-
Compact spherically symmetric solutions and gravitational collapse in SD
Flavio Mercati University of Naples Federico II
-
Self-gravitating fluid solutions of Shape Dynamics
Daniel Guariento Conestoga College
-
A Weyl-Type Theorem in Geometrized Newtonian Gravity, and How It May Bear on Shape Dynamics
Erik Curiel Ludwig-Maximilians-Universitiät München (LMU)
-
-
-
Talk
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 15
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 14
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 13
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 12
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 11
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 10
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 9
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2016/2017 - Explorations in Quantum Gravity - Lecture 8
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
-
Talk
-
PSI 2016/2017 - Relativity - Lecture 14
Neil Turok University of Edinburgh
-
PSI 2016/2017 - Relativity - Lecture 13
Neil Turok University of Edinburgh
-
PSI 2016/2017 - Relativity - Lecture 12
Neil Turok University of Edinburgh
-
PSI 2016/2017 - Relativity - Lecture 11
Neil Turok University of Edinburgh
-
PSI 2016/2017 - Relativity - Lecture 10
Neil Turok University of Edinburgh
-
PSI 2016/2017 - Relativity - Lecture 9
Neil Turok University of Edinburgh
-
-
PSI 2016/2017 - Relativity - Lecture 7
Neil Turok University of Edinburgh
-
-
Talk
-
-
Gravity Basics - 1
Veronika Hubeny University of California, Davis
-
QI Basics - 1
Patrick Hayden Stanford University
-
Entanglement - 1
Robert Spekkens Perimeter Institute for Theoretical Physics
-
A new perspective on holographic entanglement
Matthew Headrick Brandeis University
-
Bell’s Theorem
Adrian Kent University of Cambridge
-
GR: Actions and Equations
David Kubiznak Charles University
-
QI Basics - 2
John Watrous IBM (Canada)
-
-
Talk
-
Welcome and Opening Remarks
-
Marina Cortes Institute for Astrophysics and Space Sciences
-
Lee Smolin Perimeter Institute for Theoretical Physics
-
Neil Turok University of Edinburgh
-
-
-
The origin of arrows of time II
-
Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
-
Marina Cortes Institute for Astrophysics and Space Sciences
-
Tim Koslowski Technical University of Applied Sciences Würzburg-Schweinfurt
-
-
The origin of arrows of time II cont.
-
Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
-
Marina Cortes Institute for Astrophysics and Space Sciences
-
Tim Koslowski Technical University of Applied Sciences Würzburg-Schweinfurt
-
-
Testing time asymmetry in the early universe
-
Brian Keating University of California, San Diego
-
Andrew Liddle University of Lisbon
-
Richard Muller University of California, Berkeley
-
-
The fate of the big bang
-
Abhay Ashtekar Pennsylvania State University
-
Neil Turok University of Edinburgh
-
-
Time as Organization – Downward Caustation, Structure and Complexity I
Barbara Drossel Technische Universität Darmstadt
-
Time as Organization – Downward Caustation, Structure and Complexity II
-
Stuart Kauffman Santa Fe Institute
-
George Ellis University of Cape Town
-
-
-
Searching for New Particles with Black Hole Superradiance
Black hole superradiance is a fascinating process in general relativity and a unique window on ultralight particles beyond the standard model. Bosons -- such as axions and dark photons -- with Compton wavelengths comparable to size of astrophysical black holes grow exponentially to form large clouds spinning down the black hole in the process and produce monochromatic continuous gravitational wave radiation. In the era of gravitational wave astronomy and increasingly sensitive observations of astrophysical black holes and their properties superradiance of new light particles is a promising avenue to search for new physics in regimes inaccessible to terrestrial experiments. This workshop will bring together theorists data analysts and observers in particle physics gravitational wave astronomy strong gravity and high energy astrophysics to explore the signatures of black hole superradiance and to study the current and future possibilities of searching for new particles with black holes.
-
PSI 2017/2018 - Quantum Gravity (Dupuis)
PSI 2017/2018 - Quantum Gravity (Dupuis) -
The Path Integral for Gravity
Over the past three decades, the idea of a path integral over geometries, describing gravity in various dimensions, has become increasingly central to many areas of theoretical physics, including string and M-theory, holography and quantum aspects of black holes and cosmology.
In each of these areas, the path integral is frequently invoked as a formal device although, as practitioners will admit, except in very special cases the basic formula remains undefined. Typically, classical saddle points are discussed, whether real or complex, but the required integrals are left unperformed.
This state of affairs is untenable because it leaves the theory on a shaky footing and hence does not permit a sound comparison of theoretical predictions with observations. The time has come to critically reassess the foundational ideas of the path integral for gravity, including its definition, evaluation and interpretation; to identify problems with
existing uses and claims based on it, and to seek improvements. The workshop will focus on the continuum theory and its semiclassical limit, with applications to cosmology, black holes and holography. In particular, the notion of a “Euclidean path integral” for a “wavefunction of the universe” will be addressed.To this effect we intend to revisit discussion of “quantum geometrodynamics” from the path integral viewpoint and to pursue various applications. The developments in this direction that took place in the late 1970's and early 1980's were not incorporated in subsequent efforts, where the emphasis shifted to using a classical background with quantum fluctuations superimposed on it, a split which although useful in particular approximations can hardly be imagined to lie at the foundation of the theory. The revival of the discussion of the foundation of the path integral for gravity is made timely, we believe, by the introduction of new global methods such as Picard-Lefschetz theory.
The format of the workshop will be unusual. For the first three days, the mornings will begin with a longer, introductory lecture by each of the three organisers, setting out some of the foundational issues. This will be followed by shorter lectures by the participants, tackling the same foundational questions. The morning lectures, held in the Bob room, will be open to all Perimeter residents and visitors. They will be recorded and made available for viewing on PIRSA. Afternoons will be devoted to friendly and informal discussions, with participants invited to offer short contributions which follow up or develop points raised in the mornings, within a relaxed and highly conducive environment. Participation in these afternoon discussion sessions, as well as social events associated with the workshop, will be limited to registered workshop participants. The last two days of the workshop will be an opportunity for participants to continue discussions on topics which emerge as of greatest general interest, as well as to follow up in smaller groups on technical points or new ideas.
-
Quantum Black Holes in the Sky?
The past decade has witnessed significant breakthroughs in understanding the quantum nature of black holes, with insights coming from quantum information theory, numerical relativity, and string theory. At the same time, astrophysical and gravitational wave observations can now provide an unprecedented window into the phenomenology of black hole horizons. This workshop seeks to bring together leading experts in these fields to explore new theoretical and observational opportunities and synergies that could improve our physical understanding of quantum black holes.
-
PSI 2017/2018 - Relativity (Turok)
PSI 2017/2018 - Relativity (Turok) -
Hopf Algebras in Kitaev's Quantum Double Models: Mathematical Connections from Gauge Theory to Topological Quantum Computing and Categorical Quantum Mechanics
The Kitaev quantum double models are a family of topologically ordered spin models originally proposed to exploit the novel condensed matter phenomenology of topological phases for fault-tolerant quantum computation. Their physics is inherited from topological quantum field theories, while their underlying mathematical structure is based on a class of Hopf algebras. This structure is also seen across diverse fields of physics, and so allows connections to be made between the Kitaev models and topics as varied as quantum gauge theory and modified strong complementarity. This workshop will explore this shared mathematical structure and in so doing develop the connections between the fields of mathematical physics, quantum gravity, quantum information, condensed matter and quantum foundations.
-
Making Quantum Gravity Computable
Making Quantum Gravity Computable
-
-
PSI 2016/2017 - Explorations in Quantum Gravity (Dupuis)
PSI 2016/2017 - Explorations in Quantum Gravity (Dupuis) -
PSI 2016/2017 - Relativity (Turok)
PSI 2016/2017 - Relativity (Turok) -
-