Format results
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Quantum chaos and the complexity of time evolution
Vijay Balasubramanian
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Physics and complexity in a growing quantum world
Thomas Schuster - California Institute of Technology (Caltech)
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Decodable and Unlearnable Phases and Transitions
Timothy Hsieh - Perimeter Institute for Theoretical Physics
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How to prepare quantum thermal states
Chi-Fang (Anthony) Chen
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Optimization by Decoded Quantum Interferometry
Stephen Jordan - National Institute of Standards and Technology
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Superposing coherent states for fun & profit
Barry Sanders - University of Calgary
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Non-local quantum computation
Alex May - Perimeter Institute for Theoretical Physics
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General theory of symmetries and anomalies in quantum many-body lattice systems
Dominic Else - Perimeter Institute for Theoretical Physics
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Effective tools for binary black hole dynamics
Jordan Wilson-Gerow
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Multi-messenger explosions from compact objects at all scales
Luciano Combi - Perimeter Institute for Theoretical Physics
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Quantum chaos and the complexity of time evolution
Vijay Balasubramanian
I will describe new ideas relating quantum chaos to the complexity of time evolution. One approach treats physical time evolution as a quantum computation, and bounds the smallest quantum circuit that can simulate this evolution. The second approach quantifies how ergodically and rapidly a quantum… -
Physics and complexity in a growing quantum world
Thomas Schuster - California Institute of Technology (Caltech)
Modern quantum experiments achieve coherences and scales once only dreamed of, pushing the limits of physics and computation. To understand and guide these advances, the questions we ask of quantum physics today---centered around the behavior of quantum information and complexity in large coherent… -
Decodable and Unlearnable Phases and Transitions
Timothy Hsieh - Perimeter Institute for Theoretical Physics
Physics has been driven by the discovery of novel phases of matter, largely in materials. Recently, the advent of both quantum error correction and machine learning, viewed as physical phenomena, has compelled us to revisit the notion of a phase itself. I will show how decodable/undecodable regimes… -
How to prepare quantum thermal states
Chi-Fang (Anthony) Chen
Since the 1980s, simulation of quantum many-body systems has been a leading candidate for practical quantum advantage. Yet computing thermal equilibrium properties, a central pillar of this vision, still lacks an end-to-end algorithmic solution. Today, I will present a general-purpose algorithmic… -
Optimization by Decoded Quantum Interferometry
Stephen Jordan - National Institute of Standards and Technology
Achieving superpolynomial speedups for optimization has long been a central goal for quantum algorithms. I will discuss Decoded Quantum Interferometry (DQI), a quantum algorithm descended from Regev's reduction, that uses the quantum Fourier transform to reduce optimization problems to decoding… -
New Tools for Old Problems: Generative AI for Discovery in Fundamental Physics
David Shih
Generative AI — a class of algorithms that learn complex probability distributions from data — is opening new avenues for discovery across fundamental physics. In this talk, I will highlight several recent applications. At the LHC, we are ushering in a new paradigm of model-agnostic searches for new… -
Superposing coherent states for fun & profit
Barry Sanders - University of Calgary
Coherent states conveniently represent the classically meaningful wavelike states of light, as opposed to the corpuscular number states, but superposing coherent states is mind-bogglingly unclassical, including as examples "cat states", "comb states" and "compass states". I present a history of… -
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General theory of symmetries and anomalies in quantum many-body lattice systems
Dominic Else - Perimeter Institute for Theoretical Physics
Symmetries are one of the most important concepts across many areas of theoretical physics. In this talk, I will explain how to think systematically and generally about the ways in which symmetries act in quantum many-body lattice systems, incorporating locality and the thermodynamic limit. One can… -
Compact Object Astrophysics in the Multi-messenger Era
Claire Ye
We are now in the era of multi-messenger astronomy, where neutron stars and black holes—the most extreme objects in the Universe—can be studied through both electromagnetic signals and gravitational waves. These compact remnants of massive stars provide unique windows into the short lives and deaths… -
Effective tools for binary black hole dynamics
Jordan Wilson-Gerow
Gravitational wave observations have unveiled the population of merging black holes and neutron stars, providing direct access to strong-field gravity and dense nuclear matter. These compact binaries emit gravitational radiation as they inspiral and merge, producing waveforms that encode: the masses… -
Multi-messenger explosions from compact objects at all scales
Luciano Combi - Perimeter Institute for Theoretical Physics
The calm of the quiescent sky is regularly interrupted by bursts of light that can outshine the entire galaxy. These powerful explosions are associated with mergers of compact objects, the collapse of stars, and rapidly accreting black holes, where gravitational binding energy is released and…