

Strong Gravity research at Perimeter Institute is devoted to understanding both the theoretical and observational aspects of systems in which gravity is very strong (i.e., spacetime is highly curved or dynamical],. On one hand, this means studying extreme astrophysical systems, like black holes and neutron stars, as well as making and testing predictions for existing and forthcoming gravitational wave detectors, electromagnetic telescopes, and particle astrophysics experiments. On the other hand, it also includes a range of non-astrophysical topics, such as the instabilities of higher-dimensional black holes or the dynamics of strongly-coupled quantum field theories (via holography). The goal of strong gravity researcher is to test the validity of Einstein's theory of gravity, constrain proposed alternatives, understand the most extreme astrophysical systems, and investigate the ways in which highly curved or dynamical spacetimes are linked with a range of other problems in fundamental physics.
John Donoghue University of Massachusetts Amherst
Andrew Tolley Imperial College London
Johanna Erdmenger University of Würzburg
Sabrina Pasterski Perimeter Institute for Theoretical Physics
John Donoghue University of Massachusetts Amherst
Johanna Erdmenger University of Würzburg
Miguel Mlontero IFT Madrid
Sabrina Pasterski Perimeter Institute for Theoretical Physics
Andrew Tolley Imperial College London
John Donoghue University of Massachusetts Amherst
Miguel Mlontero IFT Madrid
Fernando Quevedo University of Cambridge
Carlo Rovelli Centre de Physique Théorique
Andrew Tolley Imperial College London
Astrid Eichhorn University of Southern Denmark
Christine Muschik Institute for Quantum Computing (IQC)
Barbara Soda Perimeter Institute for Theoretical Physics
Dalila Pirvu Perimeter Institute for Theoretical Physics
Ian Moss Newcastle University
Jorg Schmiedmayer Technical University of Vienna
Juan Carrasquilla Vector Institute for Artificial Intelligence
William East Perimeter Institute for Theoretical Physics
Reed Essick Canadian Institute for Theoretical Astrophysics (CITA)
Luis Lehner Perimeter Institute for Theoretical Physics
Daniel Siegel University of Greifswald
Suvodip Mukherjee Tata Institute of Fundamental Research (TIFR)
Huan Yang University of Guelph
Jonathan Gair Max Planck Institute for Gravitational Physics (Albert Einstein Institute)
Benjamin Wandelt Institut d'Astrophysique de Paris
Katerina Chatziioannou California Institute of Technology (Caltech)
Geraint Pratten University of Birmingham
Salvatore Vitale Massachusetts Institute of Technology (MIT)
Hsin-Yu Chen Massachusetts Institute of Technology (MIT)
Ruth Gregory King's College London
Ruth Gregory King's College London
Ruth Gregory King's College London
Ruth Gregory King's College London
Ruth Gregory King's College London
Ruth Gregory King's College London
Ruth Gregory King's College London
Ruth Gregory King's College London
David Kubiznak Charles University
David Kubiznak Charles University
David Kubiznak Charles University
David Kubiznak Charles University
David Kubiznak Charles University
David Kubiznak Charles University
David Kubiznak Charles University
William East Perimeter Institute for Theoretical Physics
William East Perimeter Institute for Theoretical Physics
William East Perimeter Institute for Theoretical Physics
William East Perimeter Institute for Theoretical Physics
Luis Lehner Perimeter Institute for Theoretical Physics
William East Perimeter Institute for Theoretical Physics
William East Perimeter Institute for Theoretical Physics
William East Perimeter Institute for Theoretical Physics
Andreas Bauswein Max Planck Institute for Astrophysics (MPA), Garching
Masha Baryakhtar University of Washington
Rana Adhikari California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
Latham Boyle University of Edinburgh
Eric Thrane Monash University - Department of Physics
Savas Dimopoulos Perimeter Institute for Theoretical Physics
Sam Dolan University of Southampton
Avery Broderick University of Waterloo
James Steiner Massachusetts Institute of Technology (MIT)
Frans Pretorius Princeton University
Salvatore Vitale Massachusetts Institute of Technology (MIT)
keith Riles University of Michigan–Ann Arbor
Sylvia Zhu Albert Einstein Institute
The Gravitational Physics course takes your knowledge and practice of gravity to the next level. We start by recapping the essential elements of differential geometry, adding some new techniques to the toolbox, then apply some of these methods to learning about submanifolds, extra dimensions, and black hole thermodynamics. Towards the end of the course, we delve into the frontiers, with a sample of recent research topics.
Unraveling the quantum nature of gravity is one of the most pressing problems of theoretical physics. Several ideas have been put forward and resulted in a number of theories of quantum gravity. While these theories have explored different facets of the “quantum gravity landscape”, all viable approaches should ultimately make contact with observations, and answer exciting questions in cosmology and black-hole physics.
Sharing knowledge, exchanging ideas, and building a dictionary between different theories are crucial steps toward answering these questions, efficiently contrasting different theories, and ultimately reaching a deeper understanding of our Universe.
This conference will contribute to these goals by bringing together leading experts in different approaches to quantum gravity, gravitational effective field theory, black-hole physics, and cosmology. We will focus on specific puzzles in quantum gravity and their resolutions within different approaches. The conference will be highly interactive, with plenty of time to discuss common problems, understand the big picture, and develop novel connections between fields.
Registration: Registration is now open, and both in-person and virtual participation is welcome. Online participants will be able to interact on an equal footing in question sessions and discussions. In-person attendance is limited and will be approved on a first-come, first-served basis. Talks are by invitation only, but in-person participants are encouraged to apply to present a poster.
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Confirmed Speakers and Panelists:
Territorial Land Acknowledgement
Perimeter Institute acknowledges that it is situated on the traditional territory of the Anishinaabe, Haudenosaunee, and Neutral peoples.
Perimeter Institute is located on the Haldimand Tract. After the American Revolution, the tract was granted by the British to the Six Nations of the Grand River and the Mississaugas of the Credit First Nation as compensation for their role in the war and for the loss of their traditional lands in upstate New York. Of the 950,000 acres granted to the Haudenosaunee, less than 5 percent remains Six Nations land. Only 6,100 acres remain Mississaugas of the Credit land.
We thank the Anishinaabe, Haudenosaunee, and Neutral peoples for hosting us on their land.
This meeting will bring together researchers from the quantum technology, atomic physics, and fundamental physics communities to discuss how quantum simulation can be used to gain new insight into the physics of black holes and the early Universe. The core program of the workshop is intended to deepen collaboration between the UK-based Quantum Simulators for Fundamental Physics (QSimFP; https://www.qsimfp.org) consortium and researchers at Perimeter Institute and neighbouring institutions. The week-long conference will consist of broadly-accessible talks on work within the consortium and work within the broader community of researchers interested in quantum simulation, as well as a poster session and ample time for discussion and collaboration
Territorial Land Acknowledgement
Perimeter Institute acknowledges that it is situated on the traditional territory of the Anishinaabe, Haudenosaunee, and Neutral peoples.
Perimeter Institute is located on the Haldimand Tract. After the American Revolution, the tract was granted by the British to the Six Nations of the Grand River and the Mississaugas of the Credit First Nation as compensation for their role in the war and for the loss of their traditional lands in upstate New York. Of the 950,000 acres granted to the Haudenosaunee, less than 5 percent remains Six Nations land. Only 6,100 acres remain Mississaugas of the Credit land.
We thank the Anishinaabe, Haudenosaunee, and Neutral peoples for hosting us on their land.
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.
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.
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.
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.