Computational Phase Transitions in Two-Dimensional Antiferromagnetic Melting
Zach Weinstein - University of California, Berkeley
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Non-Hermitian operators in many-body physics
Jacob Barnett - University of the Basque Country
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Causal inference yesterday, today and tomorrow (PI-IVADO-IC Special Webinar)
Ilya Shpitser - Johns Hopkins University
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Perimeter Presents - CBC Ideas: Nahlah Ayed in conversation with Claudia de Rham
Claudia de Rham - Imperial College London , Nahlah Ayed
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Why is time always moving forwards and never backwards?
Marina Cortes - Institute for Astrophysics and Space Sciences
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Cosmos, the beginnings...
Ghazal Geshnizjani - Perimeter Institute for Theoretical Physics
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Can Quantum Correlations be Explained Causally?
Robert Spekkens - Perimeter Institute for Theoretical Physics
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Computational Phase Transitions in Two-Dimensional Antiferromagnetic Melting
Zach Weinstein - University of California, Berkeley
A computational phase transition in a classical or quantum system is a non-analytic change in behavior of an order parameter which can only be observed with the assistance of a nontrivial classical computation. Such phase transitions, and the computational observables which detect them, play a… -
Non-Hermitian operators in many-body physics
Jacob Barnett - University of the Basque Country
Non-Hermitian Hamiltonians are a compulsory aspect of the linear dynamical systems that model many physical phenomena, such as those in electrical circuits, open quantum systems, and optics. Additionally, a representation of the quantum theory of closed systems with non-Hermitian observables… -
Causal inference yesterday, today and tomorrow (PI-IVADO-IC Special Webinar)
Ilya Shpitser - Johns Hopkins University
As part of a monthly webinar series jointly hosted by Perimeter, IVADO, and Institut Courtois, Ilya Shpitser will present an introduction to causal inference and its applications to problems in physics and computer science. This seminar will be fully on zoom and members of all three institutes are… -
Perimeter Presents - CBC Ideas: Nahlah Ayed in conversation with Claudia de Rham
Claudia de Rham - Imperial College London , Nahlah Ayed
About the Event: Perimeter Presents About the Speaker: Most people have a basic understanding of gravity as the fundamental force that keeps us tethered to the Earth. They've likely even heard the fabled story of Isaac Newton’s inspiration for the theory: an apple falling from a tree. But few people… -
CHIME Telescope
Kendrick Smith - Perimeter Institute for Theoretical Physics
Kendick Smith will discuss the CHIME telescope in this talk, which is part of the 2019 International Summer School for Young Physicists. -
Why is time always moving forwards and never backwards?
Marina Cortes - Institute for Astrophysics and Space Sciences
Why is the future different from the past? The most poignant property about the world around us is that time is always moving forward, yet, as odd as it may seem, our current theories of physics cannot account for this property. In all of fundamental physics, the future and the past are entirely… -
Cosmos, the beginnings...
Ghazal Geshnizjani - Perimeter Institute for Theoretical Physics
Abstract: “How did our universe begin?” is possibly one of the oldest questions that have bewildered humans throughout history. As a theoretical cosmologist, our job is to find a mathematically consistent picture for early universe that could explain observations, from the largest to the smallest… -
CPT symmetric universe
Latham Boyle - University of Edinburgh
Abstract: From astronomical observations, we know that the state of the early universe (just after the Big Bang) was extremely simple. This is surely an important clue about how the universe began, but what exactly is it trying to tell us? I will explain our new answer to this question: we think it… -
Can Quantum Correlations be Explained Causally?
Robert Spekkens - Perimeter Institute for Theoretical Physics
Abstract: There is a strong correlation between the sun rising and the rooster crowing, but to say that the one causes the other is to say more. In particular, it says that making the rooster crow early will not precipitate an early dawn, whereas making the sun rise early (for instance, by moving… -
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