Format results
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Talk
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Welcome and Opening Remarks
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Marina Cortes Institute for Astrophysics and Space Sciences
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Lee Smolin Perimeter Institute for Theoretical Physics
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Neil Turok University of Edinburgh
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The origin of arrows of time II
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Technical University of Applied Sciences Würzburg-Schweinfurt
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The origin of arrows of time II cont.
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Technical University of Applied Sciences Würzburg-Schweinfurt
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Testing time asymmetry in the early universe
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Brian Keating University of California, San Diego
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Andrew Liddle University of Lisbon
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Richard Muller University of California, Berkeley
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The fate of the big bang
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Abhay Ashtekar Pennsylvania State University
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Neil Turok University of Edinburgh
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Time as Organization – Downward Caustation, Structure and Complexity I
Barbara Drossel Technische Universität Darmstadt
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Time as Organization – Downward Caustation, Structure and Complexity II
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Stuart Kauffman Santa Fe Institute
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George Ellis University of Cape Town
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Talk
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Gravity Dual of Quantum Information Metric
Tadashi Takayanagi Yukawa Institute for Theoretical Physics
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A new perspective on holographic entanglement
Matthew Headrick Brandeis University
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Universal holographic description of CFT entanglement entropy
Thomas Faulkner University of Illinois Urbana-Champaign
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Geometric Constructs in AdS/CFT
Veronika Hubeny University of California, Davis
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Do black holes create polyamory
Jonathan Oppenheim University College London
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Tensor Network Renormalization and the MERA
Glen Evenbly Georgia Institute of Technology
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Entanglement renormalization for quantum fields
Jutho Haegeman Ghent University
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Holographic quantum error-correcting codes: Toy models for the bulk/boundary correspondence
Fernando Pastawski California Institute of Technology
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Talk
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Welcome to Perimeter Institute and the EHT 2014 Conference
Neil Turok University of Edinburgh
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Introduction to EHT
Shep Doeleman Harvard University
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Growth of supermassive black holes and their relationships to their host galaxies
Marta Volonteri Institut d'Astrophysique de Paris
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Polarized emission from Black Hole Accretion Disks and Jets
Jonathan McKinney University of Maryland, College Park
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Stellar Orbits at the Galactic Center
Andrea Ghez University of California, Los Angeles
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The Size and Morphology of Sgr A* at 7mm
Geoff Bower Academia Sinica
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Particle Acceleration and Non-thermal Emission in Radiatively Inefficient Accretion Flows
Eliot Quataert University of California, Berkeley
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Gravitational wave signatures of black hole mimicking objects
Nils Peter Siemonsen Princeton University
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Quantum Information-Inspired Tests of Quantum Gravity
Vlatko Vedral -
Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Simulating a quantised black hole
Ruth Gregory King's College London
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Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Celestial CFT from Dimensional Reduction of CFT
Leonardo Pipolo de Gioia
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Quantum Information in Quantum Gravity II
Quantum Information in Quantum Gravity II -
Gravitational wave signatures of black hole mimicking objects
Nils Peter Siemonsen Princeton University
Gravitational wave observations of strongly gravitating compact objects allow us not only to probe black holes and neutron stars, but also have the potential to uncover new fundamental physics. To distinguish black holes from their mimickers, sufficiently accurate predictions for gravitational wave signatures of these objects are required. Boson stars, a particular representative of the larger class of ultra compact objects, can be used to understand the behavior of these systems and their imprints left on the emitted waveform. I will discuss the inspiral and merger dynamics of binary boson stars, focusing particularly on the ringdown phase, and comment on the appearance of gravitational wave echoes in the post-merger phase of black hole mimickers more broadly. -
Quantum Information-Inspired Tests of Quantum Gravity
Vlatko VedralI plan to review several ways of testing if the gravitational field has quantum aspects in the low energy regime. I explain why the hybrid (half quantum/half classical) models are inadequate and how they could be ruled out. Furthermore, I maintain that there is no prima facie reason to expect problems when quantizing gravity in the linear regime; I summarise the main perceived difficulties only to dismiss them as irrelevant. Going beyond the linear regime is challenging in the lab, and one might have to look towards astrophysics and cosmology of the early universe instead. Finally, many interesting features of quantum field theory could be explored in the low-energy regime that may not necessarily be specific to gravity.
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Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Simulating a quantised black hole
Ruth Gregory King's College London
Horizons can occur in a wide range of physical situations, many of which we can construct in the lab. Most gravity simulators observe features, like super-radiance, that are analysed as a continuum effect in gravity, whereas many interesting "beyond GR" features theorise about the impact of quantised aspects of the black hole. In this talk, I will describe recent experimental work on a liquid helium giant vortex that naturally has quantisation, and how we hope to explore "black hole" phenomena in a broader context. Based on [arXiv:2308.10773 [gr-qc]] with: Patrik Svancara, Pietro Smaniotto, Leonardo Solidoro, James MacDonald, Sam Patrick, Carlo Barenghi and Silke Weinfurtner -
Millihertz Gravitational Waves: Challenges and opportunities in the LISA Era
Lorenzo SperiIn January 2024, the Laser Interferometer Space Antenna (LISA) mission was officially adopted by the European Space Agency, marking a new era in gravitational wave astronomy. LISA will be the first space-based gravitational wave detector, designed to explore the cosmos in the millihertz frequency range. This talk will present the mission's key scientific objectives and how the scientific community is preparing for the exploitation of LISA data. I will discuss the anticipated source types and the fundamental questions they could help answer. Then, we will focus on Extreme Mass Ratio Inspirals (EMRIs), a class of sources where small compact objects orbit the massive black holes at the centers of galaxies. These systems hold immense scientific potential for the LISA mission, as they encode a detailed map of the spacetime around the massive black hole. I will discuss how future detections of EMRIs can be used to constrain parameters related to accretion disks and modifications of General Relativity. Finally, I will highlight the path forward in preparing for LISA's launch and how to get involved in contributing to the mission scientific success.
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Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Lecture - Gravitational Physics, PHYS 636
Ruth Gregory King's College London
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Celestial CFT from Dimensional Reduction of CFT
Leonardo Pipolo de GioiaThe Celestial Holography conjecture posits the existence of a codimension two theory whose correlators compute the S-matrix in a conformal primary basis. Although resembling a CFT in several respects, the intrinsic definition of this proposed dual theory remains elusive. In this talk, I will discuss a conjecture suggesting that Celestial CFT (CCFT) is related to a dimensionally reduced CFT on the Lorentzian cylinder and present some concrete examples of celestial amplitudes constructed in this way.