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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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Ringing of Rapidly Rotating Black Holes in Higher-derivative Gravity
Simon Maenaut University of Copenhagen
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Comments on overlaps in de Sitter gravity and the no-boundary state
Kristan Jensen University of Victoria
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Quantum Information in Quantum Gravity II
Quantum Information in Quantum Gravity II -
The gravitational S-matrix from the path integral: asymptotic symmetries and soft theorems
The classical action, or more generally the path integral, is a convenient framework for extracting the physical consequences of symmetries. In recent years, new symmetries of gravity in asymptotically flat spacetime have been uncovered based on relations to soft theorems governing the S-matrix. I will discuss a program to understand these symmetries using a formulation in which the S-matrix is identified with the action subject to asymptotic boundary conditions. This formulation of the S-matrix is analogous to the GKP/W formulation of the AdS/CFT duality and shares many of its advantages, albeit with new subtleties due to working in asymptotically flat spacetime.
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Can a multiverse theory explain the H_0 tension, the S_8 tension, the w(z) < -1 behavior and many other cosmological observations? Maybe!
Jan Ambjorn University of Copenhagen
A simple multiverse model explains the late time exponential expansion of our universe without the need of a cosmological constant. Assuming that the local measurement of H_0 is correct, it also give a better fit to data than the standard LCDM model, as well as a z-dependent state parameter w(z) that is not incompatible with the latest DESI data. An (tentative) underlying microscopic theory of the multiverse model, based on W_3 and exceptional Jordan algebras may allow us to calculate the expansion rate of our universe.
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Ringing of Rapidly Rotating Black Holes in Higher-derivative Gravity
Simon Maenaut University of Copenhagen
Within the Effective Field Theory approach to gravity, deviations from General Relativity can be systematically described by higher-curvature operators. However, computing the resulting corrections to black hole quasinormal mode spectra remains challenging in the rapidly rotating regime, where perturbative expansions in the spin break down. Making use of recently constructed numerical rotating black hole solutions, we computed scalar quasinormal mode frequency shifts at leading order for scalar Gauss-Bonnet, dynamical Chern-Simons and Cubic Riemann corrections. We employed a pseudo-spectral collocation method to solve the perturbation equations on these backgrounds, enabling accurate computation across a broad parameter range. We observed that corrections to certain modes grow significantly as the spin approaches the near-extremal regime.
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Lecture - Quantum Gravity, PHYS 644
Aldo Riello Perimeter Institute for Theoretical Physics
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Comments on overlaps in de Sitter gravity and the no-boundary state
Kristan Jensen University of Victoria
I will discuss some aspects of quantum mechanics at late time in de Sitter space, focusing on the norm of the no-boundary state in semiclassical gravity.