Format results
-
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 Universität Potsdam
-
The gravitational Wilson loop and the non-Abelian 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 Space-time for the Big Bang and Black Holes
Abhay Ashtekar Pennsylvania State University
-
-
Talk
-
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)
-
-
Talk
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 15
David Kubiznak Charles University
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 14
David Kubiznak Charles University
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 13
David Kubiznak Charles University
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 12
David Kubiznak Charles University
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 11
David Kubiznak Charles University
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 10
David Kubiznak Charles University
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 9
David Kubiznak Charles University
-
PSI 2019/2020 - Relativity (Kubiznak) - Lecture 8
David Kubiznak Charles University
-
-
Talk
-
PSI 2018/2019 - Strong Field Gravity - Lecture 15
William East Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Strong Field Gravity - Lecture 14
William East Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Strong Field Gravity - Lecture 13
William East Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Strong Field Gravity - Lecture 12
William East Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Strong Field Gravity - Lecture 11
William East Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Strong Field Gravity - Lecture 10
William East Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Strong Field Gravity - Lecture 9
William East Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Strong Field Gravity - Lecture 8
William East Perimeter Institute for Theoretical Physics
-
-
Talk
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 15
-
Sebastian Steinhaus Friedrich Schiller University Jena
-
Etera Livine French National Centre for Scientific Research (CNRS)
-
Laurent Freidel Perimeter Institute for Theoretical Physics
-
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 14
-
Wolfgang Wieland University of Erlangen-Nuremberg
-
Hal Haggard Bard College
-
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 13
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 12
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 11
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 10
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 9
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 8
Maïté Dupuis Perimeter Institute for Theoretical Physics
-
-
Talk
-
-
Hitting the High Notes: The High Frequency Dynamics of Neutron Star Mergers
William East Perimeter Institute for Theoretical Physics
-
Post-Merger Gravitational Wave Emission
Andreas Bauswein Max Planck Institute for Astrophysics (MPA), Garching
-
Searching for Ultralight Particles with Gravitational Waves
Masha Baryakhtar University of Washington
-
3G Detectors, Voyager
Rana Adhikari California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
-
-
Gravitational Wave Telescopes: Some Cosmological Considerations
Latham Boyle University of Edinburgh
-
Astrophysics and Cosmology with Gravitational-Wave Population Inference
Eric Thrane Monash University - Department of Physics
-
-
Talk
-
Searching for Light Bosons with Black Hole Superradiance
Savas Dimopoulos Perimeter Institute for Theoretical Physics
-
Superradiant instabilities and rotating black holes
Sam Dolan University of Southampton
-
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
-
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-Universitiät 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
-
-
Emmy Noether Workshop: The Structure of Quantum Space Time
Understanding the small-scale 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.
-
Simplicity III
This cross-disciplinary 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.
-
PSI 2019/2020 - Relativity (Kubiznak)
PSI 2019/2020 - Relativity (Kubiznak) -
PSI 2019/2020 - Classical Physics (Kubiznak)
PSI 2019/2020 - Classical Physics (Kubiznak) -
Dynamics and Black Hole Imaging
With the advent of black hole imaging, we are now moving forward to black hole cinema. This workshop aims to collect the expertise across the Event Horizon Telescope Collaboration to develop, implement and apply methods to access and interpret variability in M87 and Sgr A*. The goal is to lay the foundation for the first publications based on black hole movies.
-
PSI 2018/2019 - Strong Field Gravity (East)
PSI 2018/2019 - Strong Field Gravity (East) -
PSI 2018/2019 - Explorations in Quantum Gravity (Dupuis)
PSI 2018/2019 - Explorations in Quantum Gravity (Dupuis) -
Path to Kilohertz Gravitational-Wave Astronomy
We are entering an exponentially growing phase of gravitational-wave (GW) astronomy excitingly represented by the Nobel Prize in Physics last year - only two years after the first detection. The successful multi-messenger detection of binary neutron star merger in last August has triggered increasing interests to probe the neutron star post-merger gravitational radiations as they will give more decisive and informative description of the post-merger object itself and the GW/electromagnetic emission mechanism. As the post-merger GWs mainly lie in the 1kHz-4kHz band it becomes necessary and important to think about possible third-generation GW detectors that are primarily sensitive to the high frequency band. In this workshop we shall focus on possible science case and detector configuration for kHz high-frequency detectors. We will have several invited talks while leaving more time for free discussions. We hope this workshop can serve as a seed for much broader discussions in the GW astronomy community and help promote high frequency detectors as one of the development directions of third-generation GW detectors.
-
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) -
Computational Methods for General Relativistic Magnetohydrodynamics: con2prim an
Computational Methods for General Relativistic Magnetohydrodynamics are important means of studying compact astrophysical objects such as neutron stars and core-collapse supernovae relevant e.g. to understand sources of gravitational radiation.Particular crucial elements of such methods including solving non-linear equations to extract the microphysical state from the conserved fluxes (endearingly called con2prim) or handling realistic equations of state (EOS) that are only given approximately in a tabulated manner. The state of the art for algorithms addressing these issue leaves to be desired and significantly limits stabilityaccuracy and performance of todays calculations.This workshop aims to review the known algorithmic and computational shortcomings list requirements that an ideal solution should haveand discuss potential practical solutions.
-
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.